Michael Peskin
(SLAC)
13/08/2013, 09:15
Prof.
Patrick Huber
(Virginia Tech)
13/08/2013, 10:30
Alex Kagan
(Univ. of Cincinnati)
13/08/2013, 11:15
Sarah Demers
(Yale U.)
13/08/2013, 12:30
Chris S. Hill
(The Ohio State University)
13/08/2013, 13:45
Prof.
Paul Grannis
(Stony Brook University)
13/08/2013, 14:30
Frank Calaprice
(Princeton)
14/08/2013, 08:30
Jim Buckley
(Washington Univ.)
14/08/2013, 09:45
Scott Dodelson
(Fermilab)
14/08/2013, 11:15
Michael Barnett
(LBNL)
14/08/2013, 12:45
William Barletta
(MIT)
14/08/2013, 14:30
Agnieszka Zalewska
(Polish Academy of Sciences)
14/08/2013, 16:00
Hitoshi Murayama
(Berkeley / Tokyo)
14/08/2013, 20:00
Dr
Dmitry Zhuridov
(Wayne State University)
15/08/2013, 08:30
I will discuss the two separate issues on neutrino physics. First, the new bounds on tensorial couplings of neutrinos to charged fermions from the existing limits on neutrino transition magnetic moments. Second, explanation of the atmospheric and solar neutrino data for the democratic neutrinos with only one mass splitting, using the effect of incoherence.
Hongtao Yang
(Unversity of Wisconsin-Madison)
15/08/2013, 08:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The diphoton decay mode was the most sensitive mode for the discovery of the Higgs-like resonance in 2012. This mode remains very important in the post-discovery era, being sensitive to the existence of new physics. In this talk, I summarize the observation of the resonance in the diphoton channel by the ATLAS experiment using the full Run I dataset. I also describe the measurement of signal...
Ryan Reece
(University of Pennsylvania)
15/08/2013, 08:30
"The LHC has brought a new level of sensitivity to TeV-scale new physics. Tau leptons can have preferred couplings to possible new physics, including Z' bosons motivated by grand unified theories. Hadronic tau decays are one of the most difficult final states to identify at hadron colliders like the LHC. ATLAS has multivariate techniques for identifying hadronic tau decays using Boosted...
Prof.
Nikolaos Kidonakis
(Kennesaw State University)
15/08/2013, 08:30
I present NNLO approximate calculations, based on NNLL resummation, for top quark differential transverse momentum and rapidity distributions. In particular recent results are presented for top-pair production and single-top production processes and compared to the latest experimental data from the LHC.
Dr
Preston Jones
(Cal Poly)
15/08/2013, 08:40
We consider a 5-dimensional brane world model with a single brane closely related but distinct from the Randall-Sundrum brane model. In particular we focus on the localization of 5D fields with different spins – spin 0, spin 1/2, spin 1 – to the brane. We find that the brane model studied here has different (and in some cases superior) localization properties for fields/particles with...
Dr
Joseph Virzi
(Lawrence Berkeley National Laboratory)
15/08/2013, 08:50
We search for the pair production of a new heavy quark,
assuming the new quark has a significant branching ratio to decay into a Z boson and a Standard Model top (t) or bottom (b) quark.
For a new bottom-like quark B, we focus on the decay channel B \rightarrow Zb; for a new top-like quark T, we target the decay channel T \rightarrow Zt. The search uses a dataset corresponding to 14.3...
Mr
Andrew Hard
(University of Wisconsin-Madison)
15/08/2013, 08:50
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The high resolution of the diphoton decay mode for the Higgs-like resonance discovered in 2012 provides a useful tool for probing the properties of the new boson. I summarize the observation by the ATLAS experiment of the resonance in the Run 1 dataset, and present measurements of the spin. The compatibility of the observations with the standard model will be discussed.
Dr
Patricia Rebello Teles
(Brazilian Center for Physics Research (LHC CMS Collaboration))
15/08/2013, 09:00
A study of the Standard Model (SM) three electroweak boson
production, WV$\gamma$ where V = W or Z gauge boson, is
presented concerning events with a leptonically
decaying W boson accompanied by a photon and two or more
jets. We are using the full 2012 dataset, of proton-proton
collisions at a center-of-mass energy of 8 TeV and an integrated
luminosity of 20 fb$^{-1}$,...
Mr
Rashed Ahmed
(University of Mississippi)
15/08/2013, 09:00
We consider charged Higgs and W' gauge boson contributions to the quasielastic, Δ-resonance, and deep inelastic processes in the tau-neutrino nucleon scattering ντ+N→τ^−+X and ν¯τ+N→τ^++X. These effects modify the standard model cross section for these processes and thus impact the extraction of the neutrino mixing angles θ23 and θ13. We include form factor effects in our calculations and find...
Prof.
Jonathan Rosner
(University of Chicago)
15/08/2013, 09:00
Quark and lepton flavor physics presents us with a basic question:
Can we understand the pattern of masses and mixings of the known
quarks and leptons, and how do present and proposed measurements
help to advance that goal? Topics to be discussed include the
apparent suppression of new flavor-changing effects, the status of
quark and lepton mixing, the implications of new measurements of...
Dr
Luigi Tibaldo
(KIPAC-SLAC, Stanford University)
15/08/2013, 09:10
Cosmic rays are a probe of the most energetic processes in the Universe and may encode signatures of dark-matter particles annihilation or decay. The Large Area Telescope on board the Fermi Gamma-ray Space Telescope indirectly traces cosmic rays throughout the Galaxy thanks to the diffuse gamma-ray emission produced by inelastic collisions of cosmic-ray nuclei with interstellar gas and by...
Stephen Wolbers
(Fermilab)
15/08/2013, 09:10
The Intensity Frontier (IF) experiments at Fermilab require computing, software, data handling, and infrastructure development for detector and beamline design and to extract maximum scientific output from the data. The emphasis of computing at Fermilab for many years has been on the Tevatron collider Run 2 and CMS experiments. Using the knowledge and experience gained from those experiments...
Mr
James Saxon
(University of Pennsylvania)
15/08/2013, 09:10
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Recent results on coupling measurements in the bosonic decay modes have confirmed the Higgs-like properties of the particle discovered in 2012 by the ATLAS and CMS collaborations. Angular correlations of the Higgs decay products or its boost will give further insight into the underlying kinematic properties of the signal production and decay. With the accumulated integrated luminosity of 20/fb...
Saptaparna Bhattacharya
(Brown University)
15/08/2013, 09:10
We present searches for massive top and bottom quark partners at CMS using data collected at sqrt(s)=7 and 8 TeV. Such partners can be seen in 4th generation models, or can be found in models predicting vector-like quarks to solve the Hierarchy problem and stabilize the Higgs mass. The searches span a range of final states, from multi-leptonic to entirely hadronic, and limits are set on mass...
Dr
SungWoo YOUN
(Fermilab)
15/08/2013, 09:10
We present results of a measurement of the ratio of events with correlated top quark spins to the total number of top quark events. The measurement is using 9.7 fb^-1 of data collected with the D0 detector at the Tevatron proton-antiproton collider. The fraction of events with top spin correlation is measured by employing a Matrix Element method providing increased sensitivity. Results are...
Dr
Joshua Moss
(Ohio State University)
15/08/2013, 09:20
Measurements of the productions of final states with multiple neutral bosons with ATLAS will be reported. Using 20 fb−1 data collected by the ATLAS detector at a center-of-mass energy of 8 TeV of proton-proton collisions, the production cross sections for ZZ, Zγ and Zγγ final states are measured using events where the Z bosons decay to electron- or muon- pairs. These final states have clean...
Chris Bouchard
(The Ohio State University)
15/08/2013, 09:30
Our ability to resolve new physics effects is, largely, limited by the precision with which we calculate. The calculation of observables in the Standard (or a new physics) Model requires knowledge of the associated hadronic contributions. The precision of such calculations, and therefore our ability to leverage experiment, is typically limited by hadronic uncertainties. The only...
Mr
Adish Vartak
(University of California San Diego)
15/08/2013, 09:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
CMS results on the search for the Standard Model Higgs boson in the ZZ channel, where the Z bosons decay into two charged leptons each using the full dataset recorded at the LHC from pp collisions at center of masss energies of 7 and 8 TeV, will be presented. The measured Higgs boson properties, such as the mass, decay rate and spin-parity will be discussed.
Prof.
Arie Bodek
(University of Rochester)
15/08/2013, 09:30
We use quasielastic electron scattering data on nuclear target to parametrize the enhancement to the transverse response functions in nuclear targets. This enhancement has been attributed to meson exchange currents in nuclei. We parametrize both the overall magnitude of the enhancement and the contribution to the width of the quasielastic peak.
The model is in good agreement with recent...
Alex Drlica-Wagner
(Stanford Universty)
15/08/2013, 09:34
The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects observed. Their proximity, high dark matter content, and lack of astrophysical backgrounds make them one of the most promising targets for the indirect detection of dark matter via gamma rays. Here we report on gamma-ray observations of 25 Milky Way dwarf spheroidal satellite galaxies...
Peter Onyisi
(U. Texas Austin)
15/08/2013, 09:35
Accelerators, Detectors, and Computing
both oral presentation and poster
Cloud computing offers the opportunity for small research groups with fluctuating computing needs to access significant computing power with minimal investment in hardware and administration. However the cloud environment presents its own challenges, in particular those posed by the movement and storage of the large datasets used in HEP. We have evaluated two academic Infrastructure as a...
133.
Production Cross Section Measurements of Diboson and Triboson Containing W Bosons at ATLAS, LHC
Mr
Duong Nguyen
(Argonne National Laboratory)
15/08/2013, 09:40
The production cross section measurements of dibosons and tribosons with W bosons using approximately 20 inverse femtobarn data of 8 TeV p-p collisions collected by the ATLAS detector at the Large Hadron Collider are presented. These measurements are important tests of the Standard Model predictions. The final states of interest include WW, WZ, Wgamma and Wgammagamma. No significant deviations...
Mr
Tuna Yildirim
(University of Iowa)
15/08/2013, 09:40
2+1 dimensional gauge theories have been an important theoretical testing ground for new ideas that could potentially be used in 3+1D. After three decades, a good understanding of 2+1D non-Abelian gauge theories still seems out of reach. Many think that using link invariants of knot theory may lead to a better understanding of these theories. With this motivation, we study Chern-Simons(CS) +...
Dr
James Sully
15/08/2013, 10:30
Mr
Laza Rakotondravohitra
(University of Antananarivo/Fermilab)
15/08/2013, 10:30
"MINERVA is a neutrino scattering experiment at Fermilab that studies the interactions of muon neutrinos and antineutrinos with various nuclear targets composed of plastic scintillator and a suite of nuclear targets composed of helium, carbon, iron, lead and water placed upstream of the active region. Minerva was designed to provide input support for neutrino oscillation experiments and as a...
Craig Group
(U. Virginia and Fermilab)
15/08/2013, 10:30
Since the discovery of the muon, particle physicists have carried out a series of experiments aimed at measuring flavor violation in charged-lepton interactions. To date, no such violation has been observed. The Mu2e experiment at Fermilab will search for the charged-lepton-flavor-violating process of coherent muon-to-electron conversion in the presence of a nucleus with a sensitivity four...
Dr
Ilya Osipenkov
(Texas A&M University)
15/08/2013, 10:30
We present a summary of the latest measurements of the VV cross-sections, where V=W or Z and one of the bosons decays into a pair of jets while the other decays leptonically. The data sample(s) correspond to proton-proton collision events collected with the CMS detector at sqrt(s) = 7, 8 TeV. Subsequent searches for Anomalous Triple Gauge couplings, which allow us to probe the non-Abelian...
David Williams
(UC Santa Cruz)
15/08/2013, 10:30
The Cherenkov Telescope Array (CTA) will be a new observatory for the study of very high energy (VHE) gamma-ray sources. It is designed to achieve an order of magnitude improvement in sensitivity in the ~30 GeV to ~100 TeV energy band compared to currently operating instruments (VERITAS, MAGIC, HESS). The design and capabilities of CTA will be described. The presentation focuses on how CTA...
Pramod Lamichhane
(Wayne State University)
15/08/2013, 10:30
We report a search for contact interactions due to quark and lepton substructure manifest in production of µ+ µ- and e+e- pairs. The search is performed using the full data set recorded by CMS at √s = 8 TeV corresponding to integrated luminosity of 20.6 fb-1 for dimuons and 19.6 fb-1 for dielectrons. The dilepton yields for invariant masses above 300 GeV are found to be consistent with...
Mr
Paul Turner
(University of Illinois at Chicago for the CMS Collaboration)
15/08/2013, 10:30
We present a search for the production of heavy resonances decaying into top-antitop quark pairs at the CMS Experiment. The data correspond to an integrated luminosity of 19.6 fb^-1 at sqrt(s) = 8 TeV. We consider all events containing one muon or electron and at least two jets in the final state. We present results from the combination of two dedicated searches, the first optimized for ttbar...
Dr
Arjun Menon
(U. Oregon)
15/08/2013, 10:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
In a variety of well motivated models, such as two Higgs Doublet Models (2HDMs) and supersymmetric extensions of the Standard Model (SSM), there are additional neutral Higgs bosons. The $\tau \tau$ channel is the preferred mode for discovering such scalars at the LHC. However many of these models can have a suppressed $\tau \tau$ coupling and hence alternative discovery modes are required. In...
Mr
Damon Hansen
(University of Pittsburgh)
15/08/2013, 10:55
T2K is an off-axis, long baseline neutrino oscillation experiment designed to measure numu to nue transition probabilities and their associated oscillation parameters. The detection apparatus consists of a suite of near detectors 280 m from the beam target (collectively referred to as ND280), and the Super-Kamiokande water Cherenkov detector 295 km away. The Pi-0 Detector (P0D) is a component...
Dr
Matthew Barrett
(University of Hawaiʻi at Mānoa)
15/08/2013, 10:55
The Belle-II experiment and superKEKB accelerator will form a next generation B-factory at KEK, capable of running at an instantaneous luminosity 40 times higher than the Belle detector and KEKB. This will allow for the elucidation of many facets of the Standard Model by performing precision measurements of its parameters, and provide sensitivity to many rare decays that are currently...
Dr
Thomas Latham
(University of Warwick)
15/08/2013, 11:00
To test for physics beyond the Standard Model it is vitally important to make precise measurements of direct and mixing-induced CP-violating observables in as many different quark-level transitions as possible. Charmless three-body B decays provide an excellent laboratory in which to make such measurements in loop-dominated decays. Extra sensitivity can also be gained from performing...
Aysen Tatarinov
(Texas A&M University)
15/08/2013, 11:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Direct searches for non-SM decays of a Higgs boson provide an alternative and possibly faster path to understanding the nature of newly discovered Higgs-like particle by either confirming or restricting a wide range of scenarios beyond the SM. We present a search for non-SM Higgs boson decays to a pair of new light bosons, each of which subsequently decays into a collimated pair of muons. The...
Dr
Ruchika Nayyar
(University of Arizona)
15/08/2013, 11:10
Some Beyond the Standard Model theories predict new particles that decay predominantly into top-antitop quark pairs. A search for top-antitop quark resonances that decay into the lepton plus jets final state is carried out with the ATLAS experiment at the LHC using 14 fb$^{-1}$ of $\sqrt{s}$ = 8 TeV proton-proton collisions. The search considers both cases where all of the final state jets...
Prof.
David Owen
(Ben Gurion University)
15/08/2013, 11:10
Beginning with the electroweak Lagrangian, the the two-body Green’s function can be written for various two body systems. For each possible two body system, the appro- priate Bethe-Salpeter equation is derived from which bound states containing any of the particles that are the constituents of the electro-weak theory. In particular, bound states with vector bosons is constituent are described...
Claudia Seitz
(Rutgers University)
15/08/2013, 11:10
A search for three-jet hadronic resonance production in pp collisions at a center-of-mass energy of 8 TeV using 19.5/fb of data collected by the CMS experiment in 2012 is presented. The search method is model-independent for events with high jet multiplicity and large sum jet pT; however, event selection is optimized using an R-parity-violating supersymmetric model with gluino pair production...
Dr
Andrew Smith
(University of Utah Physics and Astronomy)
15/08/2013, 11:18
In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model, with a weakly interacting massive particle (WIMP) in the mass range from 50 GeV to greater than 10 TeV. The self-annihilation of WIMPs in astrophysical regions of high DM density can produce secondary...
Dr
Jeanine Adam
(State University of New York Stony Brook, USA)
15/08/2013, 11:20
T2K is a long-baseline neutrino oscillation experiment designed to observe $\nu_{e}$ appearance in a $\nu_{\mu}$ beam. The objective of the PiZero detector (P0D), which is a part of the T2K off-axis near detector ND280, is to characterize the T2K neutrino beam and to measure neutrino cross-sections, in particular the neutral-current single pi-zero production cross-section. The design of the...
Christopher Potter
(University of Oregon)
15/08/2013, 11:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The status of ATLAS searches for Higgs bosons in extensions of the Standard Model is presented. The results cover in particular searches for the Higgs bosons of the Two Higgs Doublet Model (2HDM), the Minimal Supersymmetric Model (MSSM) and the Next to Minimal Supersymmetric Model (NMSSM). A review of the phenomenology of the Higgs sectors of these models will be given together with...
Mandy Rominsky
(Fermilab)
15/08/2013, 11:30
We present a measurement of the W boson mass using data corresponding to an integrated luminosity of 4.3 fb-1 collected with the D0 detector during Run 2 at the Fermilab Tevatron ppbar collider. With a sample of 1,677,394 W--> e nu candidate events, we measure M_W = 80.367 +/- 0.026 GeV. This result is combined with an earlier D0 result determined using an independent Run 2 data sample,...
Biplab Dey
(University of California, Riverside)
15/08/2013, 11:30
We report on recent BaBar results for the CKM matrix element |Vub| using
both inclusive and exclusive measurements of charmless semileptonic B decays.
These include the measurement of exclusive B -> pi/eta/eta'/omega l nu decays
with untagged event reconstruction and the study of the q^2 and lepton energy
distribution in inclusive B -> Xu l nu.
Prof.
Reshmi Mukherjee Mukherjee
(Barnard College)
15/08/2013, 11:42
Relativistic jets are extremely powerful outflows of collimated plasma that may be seen in active galactic nuclei (AGN), gamma-ray bursts, and X-ray binaries. AGN are believed to be powered by the accretion of matter onto a super-massive black hole (SMBH). The observed similarities (in morphology and spectrum) of jets from black holes of different masses suggests that they share a common...
Dr
Sarah Lockwitz
(Fermilab)
15/08/2013, 11:45
MicroBooNE is a liquid argon time projection chamber scheduled to begin taking data in 2014 at Fermilab. While it will investigate physics objectives (cross sections, oscillations), it also has a role in the R&D effort for proposed larger LArTPCs. This talk will discuss the design of MicroBooNE detector and the status of construction.
Mr
Daniel Charles Craik
(University of Warwick, UK)
15/08/2013, 11:50
The angle γ of the CKM unitarity triangle remains the least precisely measured parameter of the CKM mixing matrix. The precision measurement of this parameter is one of the main goals of the LHCb experiment. We present a wide range of measurements of CP violation and partial rates in B→DK decays, as well as the latest LHCb measurement of γ combining all the individual inputs.
Dr
Tim Cohen
(SLAC)
15/08/2013, 13:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
We explore the connection between the strength of the electroweak phase transition and the properties of the Higgs boson. Our interest is in regions of parameter space that can realize electroweak baryogenesis. We do so in a simplified framework in which a single Higgs field couples to new scalar fields charged under SU(3)_c by way of the Higgs portal. Such new scalars can make the electroweak...
Dr
William Shepherd
(UC Santa cruz)
15/08/2013, 13:30
I will present a calculation of the thermal decoupling temperature and implied dark matter halo mass distribution cutoff within the framework of effective theories of dark matter. For the first time, this calculation has been considered for all interactions which respect parity, whether the dark matter couples dominantly to leptons, quarks, or both, and including the relevant couplings to...
Craig Group
(U. Virginia and Fermilab), Mr
Hao Liu
(University of Virginia)
15/08/2013, 13:30
We report a measurement of the single-top-quark production cross section in the lepton+jets channel using 9.45/fb of pp̅ collision data collected by the Collider Detector at Fermilab at 1.96 TeV center-of-mass energy. Candidate events are classified as signal-like by a neural network discriminant. Measurements of s-channel production are particularly interesting at the Tevatron since this...
Chih-hsiang Cheng
(Caltech)
15/08/2013, 13:30
We present the measurements of mixing-induced CP asymmetry in semileptonic
B-meson decays using the full data set collected at the peak of the Y(4S),
with the BABAR detector at SLAC. The lepton charge directly identifies the B meson
flavor in decays; charged kaons are also used in tagging B meson flavor. Asymmetry
between B meson pairs decaying as B0-B0 and B0bar-B0bar indicates CP...
Dr
Pushpa Bhat
(FERMILAB)
15/08/2013, 13:30
Extending the energy frontier beyond the LHC would be vital to elucidate the nature of electroweak symmetry breaking and whatever new physics that might be found at the LHC. We propose here a proton-proton (pp) collider in a 100 km ring, with center of mass (CM) energy of ~100 TeV which would have substantial discovery potential for new heavy
particles and new physics beyond the Standard...
Steven Farrell
(University of California Irvine)
15/08/2013, 13:30
Supersymmetry offers an elegant solution to the hierarchy problem and can provide a candidate for dark matter. As the limits on squark and gluino masses are pushed beyond the TeV range, direct production of charginos and neutralinos can become the dominant sparticle production at the LHC. Also, light charginos and neutralinos are favored in "Natural SUSY" models with small fine-tuning of the...
Dr
Andrzej Szelc
(Yale University)
15/08/2013, 13:30
ArgoNeuT, a 175 liter Liquid Argon Time Projection Chamber (LArTPC), exposed to NUMI beamline at Fermilab (2009-2010), has collected thousands of neutrino and anti-neutrino events between 0.1 and 10 GeV. ArgoNeuT is the first LArTPC exposed to a low energy neutrino beam, first ever in the US in neutrino beam and the second LArTPC exposed to a neutrino beam ever. The project is part of the...
Ashish Kumar
(SUNY Buffalo)
15/08/2013, 13:50
Studies of associated production of a W, Z or photon with jets provide important tests of perturbative quantum chromodynamics calculations. A good understanding of such processes is essential in part because they constitute a major background to the production of the standard model Higgs boson in association with a vector boson. Recent measurements of the production of a vector boson plus...
Benjamin Carls
(Fermi National Accelerator Laboratory)
15/08/2013, 13:50
MicroBooNE is a liquid Argon time projection chamber designed to study the excess of low energy events observed at MiniBooNE. The detector is now under construction and will begin taking data at Fermilab in 2014. This talk will cover the experimental goals along with the recent results in the R&D for the detector.
Mr
Brett Jackson
(University of Pennsylvania)
15/08/2013, 13:50
The search for the electroweak production of supersymmetric particles decaying into final states containing two leptons and missing energy was performed using the full 8 TeV dataset of proton-proton collisions recorded using the ATLAS experiment. The scenarios considered in this analysis were the production of two gauginos and slepton pair production. In both of these scenarios, the...
Storm Emma
(UC Santa Cruz)
15/08/2013, 13:54
Annihilation of dark matter can result in the production of stable Standard Model particles including electrons and positrons that, in the presence of magnetic fields, lose energy via synchrotron radiation, observable as radio emission. Galaxy clusters are excellent targets to search for or to constrain the rate of dark matter annihilation, as they are both massive and dark matter dominated....
Satomi Shiraishi
(University of Chicago, Lawrence Berkeley National Laboratory)
15/08/2013, 13:55
Laser-plasma accelerators (LPAs) [1] have produced GeV electron beams (e-beams) from cm-scale devices, demonstrating that LPAs have great potential for reducing accelerator size and cost [2]. LPA experiments performed to date utilize a single laser that drives the wakefield for injection and acceleration. For applications such as high-energy accelerators, LPA designs will rely on sequencing...
Lailin Xu
(University of Michigan)
15/08/2013, 14:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Various extensions of Standard Model predict possible decays to
invisible particles of the Higgs boson recently discovered at the
Large Hadron Collider. This presentation will report results of a
direct search for invisible decays of Standard Model-like Higgs boson
which is produced in association with a Z boson, using the 4.7 fb-1 of
data at sqrt(s) = 7TeV and 20.3fb-1 of data at sqrt(S)...
Avdhesh Chandra
(Rice U.)
15/08/2013, 14:10
We present results of the measurements of CP-violating parameters for a variety of b hadron species using the full Run 2 data set collected by the D0 detector. These include a new analysis testing for direct CP violation in B+ decays, in addition to specific semileptonic charge asymmetries of B0s and B0 decays testing for CP violation in mixing.
Matteo Cremonesi
(Oxford University)
15/08/2013, 14:10
We report a measurement of the single-top-quark production cross section with the full dataset collected by the Collider Detector at Fermilab in pp̅ collisions at a center-of-mass energy of 1.96. The events are selected requiring large missing transverse energy, two or more high Pt jets and no leptons in the final state. Multivariate techniques are implemented to suppress the contribution from...
Peter Onyisi
(U. Texas Austin)
15/08/2013, 14:10
Compared to inclusive J/psi production, the associated production of weak vector bosons and J/psi mesons in hadron collisions selects a different set of partonic initial states and provides complementary information on quarkonium production mechanisms. Using 4.6 inverse femtobarns of pp collisions at sqrt(s) = 7 TeV recorded by ATLAS, we observe and measure the rate of W+J/psi associated...
Xiaowen Lei
(University of Arizona)
15/08/2013, 14:10
A search is presented for exotic processes that result in final states containing jets including at least one b jet, sizable missing transverse momentum, and a pair of leptons with the same electric charge. There are several models that predict an enhanced rate of production of such events beyond the expectations of the Standard Model. The ones considered here are pair production of chiral b'...
Dr
Andrzej Szelc
(Yale University)
15/08/2013, 14:10
Liquid Argon Time Projection Chambers are quickly becoming one of the main detector technologies in neutrino physics. They offer very good 3D and calorimetric resolution and allow relatively easy construction of large mass detectors making them a prime candidate for future precision neutrino measurements. Surprisingly, there has been relatively little effort in calibrating these detectors. The...
Mr
Rajivalochan Subramaniam
(Louisiana Tech University)
15/08/2013, 14:30
A measurement of angular correlations of jets in hadron collisions is presented. This measurement is sensitive to QCD dynamics and to the strong coupling constant, while being only weakly sensitive to parton distribution functions. The observable is the number of neighboring jets above a given transverse momentum threshold which accompany a given jet within a distance $\Delta R$ in the plane...
Mr
Ryan Kelley
(University of California, San Diego)
15/08/2013, 14:30
A search for new physics is performed using events with same-sign isolated leptons and jets in the final state. The results are based on the full sample of proton-proton collisions at a center-of-mass energy of 8 TeV with the CMS detector and corresponding to an integrated luminosity of 19.5 fb-1. In order to be sensitive to a wide variety of possible signals beyond the Standard Model, we...
Mr
Rocky So
(University of British Columbia)
15/08/2013, 14:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Searches for low mass CP-odd Higgs boson (A0) predicted in non-minimal
supersymmetric extensions of the Standard Model, have been performed at
BaBar by studying the radiative decays of the Y(nS) resonances, with n=1,2,3.
Stringent limits on the production of a light Higgs boson have been set.
Adam Davis
(LHCb)
15/08/2013, 14:30
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct and indirect CP violation in charm, and to measure D0 mixing parameters. Preliminary measurements from several decay modes are presented, with complementary time-dependent and time-integrated analyses.
Christopher Grant
(University of California, Davis)
15/08/2013, 14:30
The Cryogenic Apparatus for Precision Tests of Argon Interactions with Neutrinos (CAPTAIN) program is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. CAPTAIN began as part of a Los Alamos National Laboratory (LANL) Laboratory Directed Research and Development (LDRD) project and...
Dr
Farinaldo Queiroz
(University of California Santa Cruz)
15/08/2013, 14:42
The Planck and WMAP9 satellites, as well as the ATACAMA and South Pole telescopes, have recently presented results on the angular power spectrum of the comic microwave background. Data tentatively point to the existence of an extra radiation component in the early universe. Here, we show that this extra component can be mimicked by dark matter particles whose majority is cold, but with a small...
Aaron Taylor
(University of New Mexico)
15/08/2013, 14:45
Systems of detectors installed at the LHC operate in the radiation field produced by LHC beam collisions. To measure the radiation damage of the components of the detector systems, prototype devices are irradiated at test beam facilities that reproduce the radiation conditions expected at the LHC. The profile of the test beam and the fluence applied per time must then be known. Techniques...
Alan Schwartz
(Cincinnati)
15/08/2013, 14:50
We report results from Belle on charm mixing and CP violation:
the topics include A_CP(D^0->pi0 pi0),
D->K 3pi WS rate, CPV in Lambda_c, D mixing in D->h h,
and CPV in D->Ks K+.
Elena Guardincerri
(LANL)
15/08/2013, 14:50
The Long-Baseline Neutrino Experiment is a broad scientific program being developed in the United States as an international partnership. LBNE consists of an intense neutrino beam produced at Fermi National Accelerator Laboratory (Fermilab), a highly capable set of neutrino detectors on the Fermilab campus, and a large underground liquid argon time projection chamber (TPC) at Sanford...
Prof.
chunhui chen
(Iowa State University)
15/08/2013, 14:50
We introduce a new approach to study jet substructure in the center-of-mass frame of the jet. We demonstrate that it can be used to discriminate the boosted heavy particles from the QCD jets and the method is complimentary to the existing other jet substructure algorithms. Applications to searches for hadronically decaying W/Z+jets, top jet and heavy resonance that decays to final states with...
Dr
Alfredo Castaneda
(Texas A&M University (CMS))
15/08/2013, 15:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
We present most recent results from CMS on searches for Higgs-like particles in models beyond the Standard Model. Several rare and exotic decay modes of the Higgs boson are explored. The results of the searches are relevant for establishing whether the 125 GeV particle observed in Higgs boson searches at the LHC has the properties expected for a standard model Higgs boson.
Kazuyoshi KITAZAWA
(RISP Japan)
15/08/2013, 15:06
A long time behavior of the candidate for dark energy which satisfies the latest result of WMAP (9 Years: ΩΛ=0.721±0.025) and is considered as one of the degenerates 1) of ur-Higgs boson which has appeared as a mother for SM Higgs boson 2), is studied. It is shown that such a dark energy of almost non-mass fullerene will disrupt gradually into smaller ones consist of several σ mesons by...
Matthew Bass
(Colorado State University)
15/08/2013, 15:10
The primary goal of the Long-Baseline Neutrino Experiment (LBNE) is to measure the neutrino mixing matrix parameters. The design, optimized to searching for CP violation and determining the neutrino mass hierarchy, includes a large ($\mathcal{O}~10~kt$) Liquid Argon Time Projection Chamber (LAr TPC) at 1300 km downstream of a wide band neutrino beam. A brief introduction to the neutrino mixing...
Prof.
Steven Blusk
(Syracuse University)
15/08/2013, 15:10
LHCb has collected unprecedented large samples of B hadron decays to final states involving charmed hadrons. These decays offer many complementary measurements of CP violation and CKM matrix parameters, and serve as a laboratory for testing effective theories of hadron decays. We present a selection of new world leading results in these types of decays, including first observations of new...
Mr
Jan Zirnstein
(University of Minnesota)
15/08/2013, 16:00
Accelerators, Detectors, and Computing
both oral presentation and poster
The NOvA experiment has an 810 km long baseline and uses the upgraded NuMI neutrino beam from Fermi National Accelerator Laboratory to study neutrino oscillation parameters. The two fully active, functionally identical detectors are placed 14 milliradians off axis to access a narrow neutrino energy spectrum, due to the pion decay kinematics. The 300 ton near detector, located at Fermilab, is...
Prof.
Philip Baringer
(University of Kansas)
15/08/2013, 16:00
We present the first measurement of single top quark production in the tW-channel in pp collisions, in which a top quark is produced in association with a W boson. The data are collected with the CMS detector at center-of-mass energies of 7 TeV and 8 TeV. The experimental signature is similar to top pair production, and there is interference at higher orders between the two processes. The...
Youngjoon Kwon
(Yonsei)
15/08/2013, 16:00
We report new results on hadronic B decays including
the B->pi0 pi0 BF and asym and B->phi (K pi) BF's,
angular correlations and asymmetries
as well as other related modes.
Dr
Nabil Iqbal
(Kavli Institute for Theoretical Physics)
15/08/2013, 16:00
Dr
Ray Culbertson
(FNAL)
15/08/2013, 16:00
The CDF Collaboration continues to analyze the complete, legacy
dataset of approximately 10 fb-1. This report will cover
several recent analyses which feature high-energy photons.
QCD hard interactions and proton structure can be probed by
comparing measurements of photon cross sections to state-of-the-art
calculations. We will report cross section measurements for events
with...
Brock Tweedie
(Boston University)
15/08/2013, 16:00
If the lighter stop eigenstate decays directly to two jets via baryonic R-parity violation, it could have escaped existing LHC and Tevatron searches, even for masses as small as 100~GeV. The traditional approach to such a direct RPV stop pair search is to identify a bump in the joint spectrum of dijet pairs in four-jet events. However, this style of search seems to be in a losing race. As...
Matthew Chasco
(Northeastern University)
15/08/2013, 16:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
This talk presents the CMS results on the search for a Higgs signal that decays to undetected particles. The particular signal of interest is a Z boson, decaying into charged leptons, produced in conjunction with an invisibly decaying Higgs boson. This search utilizes techniques of the measurement of the ZZ production cross section, where one Z decays into neutrinos and the other into charged...
Jason Chaves
(Stanford University)
15/08/2013, 16:00
EXO-200 is an ongoing experiment searching for neutrinoless double beta decay using 136Xe.
Such a search can shed light on the Majorana nature of the neutrino (whether the neutrino is its own anti-particle), the absolute mass scale of neutrinos, and beyond standard model processes that violate lepton number conservation. The EXO-200 detector uses 200 kg of xenon with 80% enrichment in 136Xe...
Prof.
Priscilla Cushman
(University of Minnesota)
15/08/2013, 16:00
The Cryogenic Dark Matter Search is sensitive to WIMP interactions with target nuclei in germanium and silicon crystals held at ~50 mK. Detailed information contained in both phonon and ionization signals are used to create a WIMP-search region with backgrounds of less than one event. Raw data taken with the CDMS-II detectors was reprocessed with a pulse reconstruction algorithm which...
Scott Kravitz
(Stanford University)
15/08/2013, 16:20
In order to perform a background-free measurement of neutrinoless double-beta decay in xenon, the EXO collaboration is developing several techniques to recover and identify the barium daughter nucleus. Resonance Ionization Spectroscopy (RIS) has been shown to be both efficient and selective, both favorable aspects for a barium-tagging system. We have constructed a test setup for extracting...
Prof.
Olivier Leroy
(CPPM)
15/08/2013, 16:20
The study of CP violation in Bs oscillations is one of the key goals of the LHCb experiment. Effects are predicted to be very small in the Standard Model but can be significantly enhanced in many models of new physics. We present the world’s best measurement of the CP-violating phase φs using B0s → J/ψφ and B0s → J/ψππ decays.
Thomas Danielson
(University of California - Santa Barbara)
15/08/2013, 16:20
Two searches for gluino-mediated supersymmetry are presented based on events with large missing transverse energy and multiple jets, with some of the jets being identified as a bottom-quark jet. These searches cover two separate final states, one containing exactly zero isolated leptons, and the other containing exactly one isolated muon or electron. Both searches have been performed using...
Nobuo Sato
(Florida State University)
15/08/2013, 16:20
The precise knowledge of parton distribution functions at large-x is important in order to understand the production of a massive state at forward rapidities at the LHC. Currently, the gluon PDF is highly unconstrained at large-x and it is mainly constrained by jet data. In the past, direct photon production with high transverse momentum at fixed target experiments was used to constrain gluon...
Mr
Michael Mooney
(Princeton University)
15/08/2013, 16:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
A search for the Higgs boson produced in association with a W or Z boson and decaying to bottom quarks is presented. A sample of approximately 24/fb of data recorded by the CMS experiment at the Large Hadron Collider, operating at center-of-mass energies of 7 TeV and 8 TeV in 2011 and 2012, respectively, is used to search for events consistent with the signature of two b-jets recoiling with...
Ms
Monica Pangilinan
(Brown University)
15/08/2013, 16:35
The fundamental nature of dark matter is one of the key open questions that is currently being probed at underground sites worldwide. The LZ experiment is a next generation liquid Xenon detector that will continue this search, building upon the expertise and experience provided by the LUX experiment. The proposed LZ detector will be a 7-ton liquid Xe TPC that will use the current...
Dr
Keith Ulmer
(University of Colorado, Boulder)
15/08/2013, 16:40
The sensitivity for CMS searches for supersymmetry is evaluated in the context of an upgraded LHC at a center-of-mass energy of 14 TeV and an integrated luminosity of 300 fb-1. Results for several key searches for supersymmetry are presented including direct and gluino-mediated stop and sbottom production and electroweak production of supersymmetric particles.
Mr
Patrick True
(Michigan State University)
15/08/2013, 16:40
We present the search for W' -> tb using the LHC pp collision data collected with the ATLAS detector at a center-of- mass energy of 8 TeV. The primary backgrounds to this search are ttbar, W+jets, and multijets processes. To reduce the contributions of these backgrounds we require a leptonic final state and use Boosted Decision Trees to discriminate against background-like events. This...
Dr
Wenbin Yan
15/08/2013, 16:40
Prof.
Michael Sokoloff
(Cincinnati)
15/08/2013, 16:40
LHCb has recorded large samples of semileptonic B decays. These provide potential to study CP violation effects in the B0 and Bs0 systems. Decay time-integrated or time-dependent asymmetries between charge-conjugate final states probe CP violation in B(s)0 mixing through the measurement of the parameter Afs (sometimes referred to as Asl). These measurements rely on data-driven techniques...
Graham Giovanetti
(University of North Carolina at Chapel Hill)
15/08/2013, 16:40
The MAJORANA DEMONSTRATOR is a 40 kg array of high purity germanium detectors being constructed at the 4850 foot level of the Sanford Underground Research Facility. Up to 30 kg of these detectors will be enriched to greater than 86% in in germanium-76. The goal of the DEMONSTRATOR is to establish the feasibility of constructing a tonne-scale, germanium based double-beta decay experiment by...
Mr
David Westmark
(Florida State University)
15/08/2013, 16:40
The precise knowledge of parton distribution functions (PDFs) is indispensable to the accurate calculation of hadron-initiated QCD hard scattering observables. Much of our information on PDFs is extracted by comparing deep inelastic scattering (DIS) and lepton pair production (LPP) data to convolutions of the PDFs with the partonic cross sections of these processes. It is known that partonic...
Benjamin Auerbach
(Argonne National Laboratory)
15/08/2013, 16:50
When the LHC reaches beyond its current design luminosity, the load on the Level-2 trigger system will increase significantly due to both the need for more sophisticated
algorithms to suppress backgrounds and the larger event sizes. The Fast TracKer
(FTK) is a custom electronics system that will operate at the full Level-1
accepted rate of 100 KHz and provide high quality tracks at the...
Dr
Nicolas Morange
(University of Iowa)
15/08/2013, 16:55
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Updated results are shown in the search for the Higgs decay into b-bbar where the Higgs boson is produced in association with a vector boson (W/Z). The search is performed using the complete 2011 and 2012 datasets collected by the ATLAS detector at the LHC. The analysis is done in three different lepton multiplicities (0, 1, and 2 leptons), corresponding to the decays of ZH (Z --> nu + nu), WH...
Nikita Blinov
(TRIUMF/University of British Columbia)
15/08/2013, 17:00
The scalar potential of the Minimal Supersymmetric Standard Model (MSSM)
admits the existence of vacua with non-vanishing expectation values of
electrically and colour charged fields. If such minimima are deep enough,
the physical electroweak vacuum is rendered unstable by quantum tunneling.
By comparing the lifetime of the electroweak vacuum with the age of the
universe, the MSSM...
Matthew Barrett
(U Hawaii)
15/08/2013, 17:00
We report Belle results on CP violation in b->u modes such as
B->rho0 rho0 and B->pi+ pi- as well as in b->s modes
including B^0-> omega K_S and eta' K_S.
Dr
Alfredo Castaneda
(Texas A&M University (CMS))
15/08/2013, 17:15
Following the increases in the LHC instantaneous luminosity, maintaining effective triggering and avoiding dead time will become especially challenging. As the sensitivity of many physics studies, including higgs measurements, depends critically on the ability to maintain relatively low muon momentum thresholds, the identification of potential improvements in triggering is particularly...
Yao Ming
(University of Wisconsin-Madison)
15/08/2013, 17:15
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
A search for the Standard Model Higgs boson produced in association with a W or Z boson and decaying to $b\bar{b}$ using the ATLAS detector at the LHC is performed. The search uses 4.7 $fb^{-1}$ of data at $\sqrt{s}$ = 7 TeV and 21 $fb^{-1}$ at $\sqrt{s}$ = 8 TeV. The analysis uses events containing zero, one and two leptons. This talk will focus on the one lepton channel, which targets WH to...
296.
Electron capture spectroscopy and isotope production: research toward neutrino mass measurement
Dr
Gerd J Kunde
(Los Alamos National Laboratory)
15/08/2013, 17:20
Calorimetric spectroscopy via electron capture (ECS) is a candidate for a direct measurement of the neutrino mass, for isotopes with a Q-value of a few KeV. The use the synthetic, rare, and unusual isotope Ho-163 has significant advantages but substantial new challenges. Two absolutely essential challenges to overcome are the production of Ho-163 and measuring ECS spectra with very high...
Tomonari Miyashita
(Caltech)
15/08/2013, 17:20
We present the observation of Time-reversal asymmetry as well
as a selection of recent results on CP violation effects
in hadronic B-meson decays using the full data set collected at the peak of the Y(4S)
with the BABAR detector at SLAC. They include measurements of processes
sensitive to the angles of the Unitarity Triangle and studies of direct CP violation.
Prof.
Douglas Singleton
(California State University, Fresno)
15/08/2013, 17:20
We discuss two possible covariant generalizations of the Aharonov–Bohm effect – one expression in terms of the space–time line integral of the four-vector potential and the other expression in terms of the space–time “area” integral of the electric and magnetic fields written in terms of the Faraday2-form. These expressions allow one to calculate the Aharonov–Bohm effect for time-dependent...
Justin Albert
(University of Victoria)
16/08/2013, 08:30
The B decays to omega omega and omega phi are
related to B -> phi K* via an SU(3) rotation.
The study of these yet unseen decay
modes can therefore provide information regarding
the unexpectedly small value of the longitudinal spin component
(f_L) measured in B -> phi K* decays.
We present here the results of a new search for these decay modes,
as well as other charmless B...
Dr
Nathan Whitehorn
(University of Wisconsin - Madison)
16/08/2013, 08:30
The origin of high-energy cosmic rays is one one of the most persistent mysteries in physics. Neutrinos, as neutral tracers of hadronic acceleration, may offer a new and unique window into this problem and others in high-energy astrophysics. This talk will discuss recent results from the antarctic IceCube neutrino observatory, the first operating gigaton-scale neutrino detector, showing first...
Prof.
Nepomuk Otte
(Georgia Institute of Technology)
16/08/2013, 08:45
Special and general relativity extended our understanding of the concepts of space and time, two of the most basic topics of investigation of modern physics. However, quantum theory has shown that there is more to learn regarding these concepts. Considerations of how to combine the concepts of quantum mechanics and gravity (quantum gravity) indicate that the Planck scale is a ``natural...
Prof.
Richard Kass
(Ohio State)
16/08/2013, 08:45
The ATLAS Diamond Beam Monitor (DBM) is designed to measure the luminosity and provide important diagnostic information on the beam quality at the highest luminosity envisioned at the LHC. The DBM uses polycrystalline CVD diamond the same size and with the same pixel pattern as the Insertable B Layer (IBL) silicon sensors. The DBM consists of 8 telescopes with each telescope containing three...
Dan Santel
(Cincinnati)
16/08/2013, 08:50
We report results on new resonances and B_s physics from
Belle unique dataset at the Upsilon(5S) resonance. The results
include Z_b->B B^*, B^* B^*; Obervation of the
Upsilon(1D), Scan of Upsilon(nS) pi+pi-, B_s->J/psi K+K-,
B_s ->Ds h and related modes.
Dr
Jordi Salvado
(Wisconsin IceCube Particle Astrophysics Center (WIPAC) and Department of Physics University of Wisconsin, Madison)
16/08/2013, 09:00
Recent cosmological measurements favors additional relativistic energy
density beyond the one provided by the three active neutrinos and
photons of the Standard Model(SM), suggesting the need of new light
states in the theory beyond those of the SM. Another alternative is
that this increase comes from the decay of some new form of heavy
matter into the SM neutrinos. In this talk I will...
Prof.
Dawn Williams
(University of Alabama)
16/08/2013, 09:00
The IceCube Neutrino Observatory, completed in 2010 and located at the
geographic South Pole, is the largest neutrino telescope in the world.
IceCube includes the more densely instrumented DeepCore subarray, which
increases IceCube's sensitivity at neutrino energies down to 10 GeV.
DeepCore has recently demonstrated sensitivity to muon neutrino
disappearance from atmospheric neutrino...
Dr
Pavel Nadolsky
(Southern Methodist University)
16/08/2013, 09:10
Review of recent progress on PDFs.
Roberto Mussa
(Torino)
16/08/2013, 09:10
We report recent Belle results
on new particles including observation of the
Z_c(3894), observation of a chi_c1 gamma resonance,
observation of the eta_b(1S), eta_b(2S), h_b and chi_b states
and determination of the quantum numbers of the Z(4430).
Dr
Federico Alessio
(CERN)
16/08/2013, 09:10
The LHCb experiment is designed to perform high-precision measurements of CP violation and search for New Physics using the enormous flux of beauty and charmed hadrons produced at the LHC. The operation and the results obtained from the data collected in 2010 and 2011 demonstrate that the detector is robust and functioning very well. However, the limit of 1 fb–1 of data per nominal year cannot...
Dr
Andrea Albert
(The Ohio State University)
16/08/2013, 09:20
There is overwhelming evidence that non-baryonic dark matter constitutes ~27% of the energy density of the universe. Weakly Interacting Massive Particles are promising dark matter candidates that may produce monochromatic gamma rays via annihilation or decay. Such interactions would produce a narrow spectral line in the Galactic diffuse gamma-ray energy spectrum. We have searched for...
Patrick Lukens
(Fermilab)
16/08/2013, 09:30
We report measurements of the masses and mean lifetimes for ground state b-baryons updated with the full Tevatron run II data set obtained by the CDF detector. The baryons are reconstructed in decay modes with a J/psi or Xi_c, namely Lambda_b --> J/psi Lambda, Xi_b^- --> J/psi Xi, Omega_b --> J/psi Omega, Xi_b^- --> Xi_c^0 pi^-, and Xi_b^0 --> Xi_c^- pi^+. These are legacy measurements for...
Dr
Ioana Anghel
(Iowa State University/Argonne National Lab)
16/08/2013, 09:30
Many of the yet unanswered questions in neutrino physics, such as CP violation in the lepton sector or neutrino mass hierarchy, could be answered with higher sensitivity neutrino experiments. New photodetectors based on micro-channel plates are being developed by the Large-Area Picosecond Photo Detector (LAPPD) Collaboration. These photosensors have been shown to have excellent spatial and...
Dr
Tareq AbuZayyad
(University of Utah)
16/08/2013, 09:33
The Telescope Array Low-Energy Extension (TALE) is a hybrid, Air Fluorescence Detector (FD) / Scintillator Array, designed to study cosmic ray initiated showers at energies above ~3x10^16 eV. Located in the western Utah desert, the TALE FD is comprised of 10 telescopes which cover the elevation range 31-58 deg in addition to 14 telescopes with elevation coverage of 3-31 deg.
As with all...
Ms
Indara Suarez
(Texas A&M University)
16/08/2013, 09:35
The High Luminosity LHC accelerator upgrade will provide five times higher instantaneous luminosity than the current LHC. This boost in luminosity will allow the Compact Muon Solenoid (CMS) experiment to probe the properties of the newly discovered Higgs boson and extend the search for new physics beyond the Standard Model. In order to handle the increased data rate and maintain high trigger...
Dr
Simone Alioli
(Lawrence Berkeley National Laboratory)
16/08/2013, 09:40
Review of recent progress in matching higher order calculations and parton showers.
Mr
Elwin Martin
(Georgia Institute of Technology)
16/08/2013, 10:30
We calculate flavor-changing neutral current (FCNC) processes with top-quark production via anomalous couplings at 7, 8, and 14 TeV. We update progress on the FCNC processes $pp \to tZ$, $pp \to t \gamma$ and $pp \to tg$. We go beyond leading order and include soft-gluon corrections through next-to-next-to-leading order.
Elizabeth Worcester
(BNL)
16/08/2013, 10:30
The Daya Bay experiment has observed well over a million electron anti-neutrino interactions in detectors 2 km or less from six nuclear reactors. The latest results on electron anti-neutrino disappearance and reactor flux will be presented.
Mr
Bilas Pal
(Syracuse University)
16/08/2013, 10:30
Precision measurements of b-hadron lifetimes are a key goal of the LHCb experiment. In the Bs0 sector, the measurement of the effective lifetimes for Bs0 mesons decaying to CP-odd, CP-even and flavor specific final states are essential for constraining the Bs0 mixing parameters, ΔΓs, the average width Γs and the CP-violating phase, φs. Measurements of b baryon lifetimes are also important to...
Dr
Beth Reid
(Lawrence Berkeley National Laboratory)
16/08/2013, 10:30
The SDSS-III Baryon Oscillation Spectroscopic Survey, now 90% complete, is measuring the three-dimensional cosmic structure with 1.35 million new redshifts. Galaxy clustering measurements provide constraints on the cosmic expansion history through the baryon acoustic oscillation feature. In addition, the imprint of galaxy peculiar velocities on the observed galaxy clustering, "redshift-space...
Mr
Alexander Naip Tuna
(University of Pennsylvania)
16/08/2013, 10:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
Measurements involving the newly discovered boson with a mass of approximately 125 GeV have all been consistent with the Standard Model Higgs boson hypothesis. If this particle is indeed the Standard Model Higgs boson, then it should interact with fermions via Yukawa couplings. The investigation of whether this boson couples to fermions (and in particular leptons) is a fundamental test of this...
Dr
Aseet Mukherjee
(Fermilab)
16/08/2013, 10:30
The Mu2e experiment will search for neutrinoless conversion of muons to electrons using an intense muon beam stopped in an aluminum target. The signature is an electron with energy nearly equal to the muon mass. Precise and robust measurement of the outgoing electron momentum is an essential element to the experiment. We describe the design of a low mass tracking system to meet this...
Peter Garbincius
(Fermilab)
16/08/2013, 10:30
The DO Collaboration has published three measurements of the like-sign dimuon charge asymmetry in p pbar collisions at the Fermilab Tevatron collider. The result is significantly different from the standard model prediction. In this talk we present the final measurement of this CP violating asymmetry, using the full 10 fb-1 of data collected during Run II, and discuss its possible interpretations.
Dr
Christopher Kelly
(Columbia University)
16/08/2013, 10:40
Direct CP-violation was first observed in the late 1990s in K->pi pi decays, and precise experimental measurements have since been made. However until recently it has not been possible to calculate its measure directly from the Standard Model due to it receiving large contributions from QCD in the hadronic regime in which perturbation theory is not applicable. This is unfortunate because these...
Mr
Daniel Chao
(Caltech)
16/08/2013, 10:50
We present the measurement of B -> D(*) tau nu decay, which is sensitive at tree
level to New Physics contributions in the form of a charged Higgs boson. The
measured branching fraction is 3.4 sigma larger than the SM predictions, and
excludes the 2HDM of type 2 with a 99.8% confidence level for any value of
tan(beta)/mHiggs.
Additional studies of the momentum transfered to the...
Peter Onyisi
(U. Texas Austin)
16/08/2013, 10:50
The branching fractions of the decays $D^0 \to K^- \pi^+$, $D^+ \to K^- \pi^+ \pi^+$, and $D_s \to K^- K^+ \pi^+$ normalize many measurements of processes involving charm quarks. In addition hadronic $D$ decays probe the interaction of short-distance weak processes and long-distance QCD effects. We report results on three $D^0$, six $D^+$, and thirteen $D_s$ branching fractions obtained...
Mariana Vargas-Magana
(Carnegie Mellon University)
16/08/2013, 10:54
The dominant effect of the nonlinear evolution of the density field is the smoothing of the Baryonic Acoustic Oscillation (BAO) feature, the standard reconstruction technique has shown to reverse this smoothing recovering the linear density field. The standard reconstruction technique has been tested with simulations and very recently, it has been applied to SDSS galaxy data enabling a...
Rachel Carr
(Columbia University)
16/08/2013, 10:55
To enhance sensitivity to electron antineutrino oscillations, the Double Chooz collaboration has developed a variety of innovative analysis techniques. Double Chooz is the only reactor antineutrino experiment to expand the inverse beta decay search to include neutron captures on hydrogen as well as the standard gadolinium captures. As of summer 2013, it the only experiment of its kind to...
Daniel Noonan
(University of Kansas)
16/08/2013, 10:55
The silicon tracking system of CMS consists of 16588 modules, designed to precisely measure the trajectories of charged particles resulting from collisions at the LHC. The performance of the CMS tracker is dependent on the positional resolution of the modules with an accuracy on the order of microns, and thus requires that the alignment of the detector components be well measured. This is...
Fuquan Wang
(University of Wisconsin Madison)
16/08/2013, 11:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The H->Zgamma decay mode is a key to understanding any deviation in signal strength from Standard Model expectation in the H->diphoton decay mode. I summarize the selection, background estimation, statistical treatment and results of search for Standard Model Higgs boson in the channel H->Zgamma, Z->l+l-, where l = e or mu, using the 4.6 fb-1 of proton-proton collisions at sqrt(s)=7TeV and...
Alan Eisner
(U.C. Santa Cruz)
16/08/2013, 11:10
We report on studies of flavor-changing neutral current decays of B mesons,
recently performed using the large data set collected with the BaBar detector.
Sensitivity to New Physics is tested through measurements of decay rates,
rate asymmetries, and CP asymmetries, in several b -> s gamma, b -> s l+l-,
b -> d gamma, and b -> d l+l- processes, as well as B -> K(*) nu anti-nu decays.
Marj Corcoran
(Rice University)
16/08/2013, 11:10
We present a search for the rare decay Bs-> mu mu in the D0 detector. All results are based on the full D0 data set of 10.4 fb-1 of integrated luminosity.
Ms
Sonam Mahajan
(Panjab University, Chandigarh, India)
16/08/2013, 11:20
The Main Injector Particle Production (MIPP) experiment at Fermilab is a fixed target hadron production experiment. It measures particle production in interactions of 120 GeV/c primary protons from the Main Injector and secondary beams of $\pi^{\pm}, \rm{K}^{\pm}$, p and $\bar{\rm{p}}$ from 5 to 90 GeV/c on nuclear targets which include H, Be, C, Bi and U, and a dedicated run with the NuMI...
Dr
Patrick Draper
(UC Santa Cruz, SCIPP)
16/08/2013, 11:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
I will survey some of the theoretical implications of a Higgs boson with the observed mass and couplings, focusing on the Standard Model, supersymmetry, and two-Higgs doublet models.
Dr
Sergio Diez-Cornell
(Lawrence Berkeley National Laboratory)
16/08/2013, 11:45
This paper describes the integration structures for the silicon strips tracker of the ATLAS detector proposed for the Phase-II upgrade of the Large Hadron Collider (LHC), also referred to as High Luminosity LHC (HL-LHC). In this proposed detector Silicon strip sensors are arranged in highly modular structures, called "staves" and "petals". This paper presents performance results from...
Dr
Eugenia Puccio
(Stanford)
16/08/2013, 11:50
We present a search for fourteen lepton-number violating
processes B --> X-l+l+, where X- = K-, pi-, rho-, K*-, or anti-p,
and l+ = e+ or mu+, with a sample of about 470 million B anti-B pairs
collected with the BaBar detector at the PEP-II
asymmetric-energy e+e- collider at SLAC.
Prof.
Sheldon Stone
(Syracuse, LHCb)
16/08/2013, 11:50
We consider the relative decay rates of B0 and Bs mesons into a J/psi plus a light scalar meson either the f0(500) (\sigma) or the f0(980). We show that it is possible to distinguish between the quark content of the scalars being quark-antiquark or tetraquark by measuring specific ratios of decay rates. Using current data we determine the ratio of form-factors in $Bs -> J/psi f0(980) with...
Ms
Indara Suarez
(Texas A&M University)
16/08/2013, 13:00
poster
The High Luminosity LHC accelerator upgrade will provide five times higher instantaneous luminosity than the current LHC. This boost in luminosity will allow the Compact Muon Solenoid (CMS) experiment to probe the properties of the newly discovered Higgs boson and extend the search for new physics beyond the Standard Model. In order to handle the increased data rate and maintain high trigger...
Mr
Jan Zirnstein
(University of Minnesota)
16/08/2013, 13:00
poster
The NOvA experiment has an 810 km long baseline and uses the upgraded NuMI neutrino beam from Fermi National Accelerator Laboratory to study neutrino oscillation parameters. The two fully active, functionally identical detectors are placed 14 milliradians off axis to access a narrow neutrino energy spectrum, due to the pion decay kinematics. The 300 ton near detector, located at Fermilab, is...
Peter Onyisi
(U. Texas Austin)
16/08/2013, 13:00
poster
Cloud computing offers the opportunity for small research groups with fluctuating computing needs to access significant computing power with minimal investment in hardware and administration. However the cloud environment presents its own challenges, in particular those posed by the movement and storage of the large datasets used in HEP. We have evaluated two academic Infrastructure as a...
Dr
Sergio Diez-Cornell
(Lawrence Berkeley National Laboratory)
16/08/2013, 13:00
poster
Lawrence Berkeley national Laboratory (LBNL) is a renowned institution in High Energy Physics research and instrumentation development. The ATLAS group of the Physics Division has been deeply involved in the construction, installation, and operation of the ATLAS detector at the LHC. This paper describes the instrumentation activities in which the group is currently involved regarding the...
Prof.
Michael Sokoloff
(Cincinatti)
16/08/2013, 13:00
Accelerators, Detectors, and Computing
The LHCb High Level Trigger uses two stages of software running on an Event Filter Farm (EFF) to select events for offline reconstruction and analysis. The first stage (Hlt1) processes approximately 1 MHz of events accepted by a hardware trigger. In 2012, the second stage (Hlt2) wrote 5 kHz to permanent storage for later processing. Following the LHC's Long Stop 1 (anticipated end date...
Mr
David Martinez
(CBPF Brazil)
16/08/2013, 13:00
poster
MINERvA is a few-GeV neutrino scattering experiment that has been taking data in the NuMI beam line at Fermilab since November 2009. The experiment will provide important inputs, both in support of neutrino oscillation searches and as a pure weak probe of the nuclear medium. For this, MINERvA employs a fine-grained detector, with an eight ton active target region composed of plastic...
Mr
Angelo Monteux
(UCSC)
16/08/2013, 13:00
poster
Motivated by null LHC searches for R-parity conserving SUSY, I will present the general structure of RPV couplings in presence of a Froggatt-Nielsen horizontal symmetry. For sub-TeV SUSY, lepton number must be an accidental symmetry, while baryonic RPV allows natural low-energy SUSY. The upper limit for the magnitude of the largest RPV coupling is 10^{-3} (from dinucleon decay) while the...
Ms
Sonam Mahajan
(Panjab University, Chandigarh)
16/08/2013, 13:00
poster
The Main Injector Particle Production (MIPP) experiment at Fermilab is a fixed target hadron production experiment. It measures particle production in interactions of 120 GeV/c primary protons from the Main Injector and secondary beams of $\pi^{\pm}, \rm{K}^{\pm}$, p and $\bar{\rm{p}}$ from 5 to 90 GeV/c on nuclear targets which include H, Be, C, Bi and U, and a dedicated run with the NuMI...
Dr
Alfredo Castaneda
(Texas A&M University (CMS))
16/08/2013, 13:00
poster
Following the increases in the LHC instantaneous luminosity, maintaining effective triggering and avoiding dead time will become especially challenging. As the sensitivity of many physics studies, including higgs measurements, depends critically on the ability to maintain relatively low muon momentum thresholds, the identification of potential improvements in triggering is particularly...
Dr
Federico Alessio
(CERN)
16/08/2013, 13:00
poster
The LHCb experiment at CERN has proposed an upgrade towards a full 40 MHz readout system in order to run between five and ten times its initial design luminosity with an upgraded LHCb detector. As a consequence, the various LHCb sub-systems in the readout architecture will be upgraded to cope with higher sub-detector occupancies, higher rate, and higher readout load. The new architecture, new...
Rachel Bartek
(University of California Riverside)
16/08/2013, 13:00
A search for the standard model Higgs boson in pp collisions is presented in the associated production channel Z(tautau)H(bb) where each tau decays leptonically, one to an electron, the other to a muon. A data sample comprising of 5.0 fb-1 at center-of-mass energy 7 TeV and 19 fb-1 at center-of-mass energy 8 TeV collected by the CMS detector at the LHC has been analyzed and 95% confidence...
Matt Kramer
(UC Berkeley)
16/08/2013, 13:00
The Daya Bay Reactor Neutrino Experiment was designed to achieve a sensitivity on the value of $\sin^22\theta_{13}$ to better than 0.01 at 90\%~C.L. The experiment consists of eight antineutrino detectors installed underground at different baselines from six nuclear reactors. With data collected from six antineutrino detectors for 140 days, Daya Bay has thus far published a measurement of...
Benjamin Auerbach
(Argonne National Laboratory)
16/08/2013, 13:00
poster
When the LHC reaches beyond its current design luminosity, the load on the Level-2 trigger system will increase significantly due to both the need for more sophisticated
algorithms to suppress backgrounds and the larger event sizes. The Fast TracKer
(FTK) is a custom electronics system that will operate at the full Level-1
accepted rate of 100 KHz and provide high quality tracks at the...
Mr
Omar Moreno
(Santa Cruz Institute for Particle Physics/University of California, Santa Cruz)
16/08/2013, 13:00
poster
The Heavy Photon Search (HPS) is a new experiment at Jefferson Lab which will search for heavy $U(1)$ vector bosons (heavy/dark photons) in the mass range of 20 MeV/$c^2$ to 1 GeV/$c^2$. Dark photons in this mass range are theoretically favorable and may mediate dark matter interactions. The dark photon couples to electric charge through kinetic mixing with the photon, allowing its production...
Colin Parker
(cojparke@ucsc.edu)
16/08/2013, 13:00
poster
We propose to develop a fast, thin silicon sensor with gain capable to concurrently measure with high precision the space
(~10 μm) and time (~10 ps) coordinates of a particle.
An integral part of the proposed sensors is the internal charge multiplication in silicon sensors, allowing to
thin pixelated silicon sensors by at least a factor 10 and keeping the performance of thick sensors.
This...
Mr
Mehdi Roeinpeikar
(PhD student at University of Illinois at Urbana-Champaign)
16/08/2013, 13:00
Recent interest in a photon-photon collider as a possible Higgs factory has revived the question of what other physics that can be done with such machines. We demonstrate that the bb bar cross section, a large background to Higgs production at high energy photon colliders, has an uncertainty due to the resolved structure of the photon of nearly an order-of-magnitude. Hence, study of the...
Dr
Himansu Sahoo
(Argonne National Laboratory)
16/08/2013, 13:00
poster
I will present the development of a new prototype wireless data acquisition system with the intended application to read-out
instrumentation systems having thousands of channels. The data acquisition and control is based on a compliant implementation of 802.11 based
hardware and protocols. Our case study is for large detectors containing photomultiplier tubes. We have explored both free-space...
Mr
Jae Hyeok Yoo
(UC San Diego)
16/08/2013, 14:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The evidence for a new particle decaying to W+W- in the fully leptonic final state in a standard model Higgs boson search is observed. The analysis is performed using 4.9 fb-1 and 19.5 fb-1 of data at the center-of-mass energy 7 TeV and 8 TeV, respectively, collected by CMS detector. The W+W- candidates are selected in the events with two energetic leptons of opposite charges and large missing...
Prof.
Frank Porter
(Caltech)
16/08/2013, 14:30
The BABAR Collaboration has an intensive program of studying hadronic
cross sections at low-energy e+e- collisions, accessible at BaBar via
initial-state radiation. Our measurements allow significant improvements
in the precision of the predicted value of the muon anomalous magnetic
moment. These improvements are necessary for shedding light on the
current ~3.5 sigma difference between...
Jia Xu
(University of Michigan)
16/08/2013, 14:30
We are going to report on the performance of the K0TO experiment at J-PARC during the 2013 physics run. The goal of K0TO is to discover and measure the rate of the rare decay KL into pi0 nu nubar .
This flavor changing neutral current decay violates CP directly and proceeds through second-order weak interactions.
The Standard Model predicts the branching ratio to be (2.8+/-0.4)x10^(-11)....
David Brown
(University of Louisville)
16/08/2013, 14:30
Baryonic decays account for about 7% of the B-meson width, and have been studied
in recent years by the B factories.
These studies reveal properties of hadronization at low q^2, such as s anti-s suppression
known from jet fragmentation, and phase space relations between the baryon and antibaryon.
The measurement and comparison of exclusive branching fractions of
baryonic B decays...
Mr
Carlos Cunha
(Stanford University)
16/08/2013, 14:30
The Nobel Prize in Physics for 2011 was awarded for the discovery that the
expansion of the Universe is accelerating. Yet the physical origin of
cosmic acceleration remains a mystery. The Dark Energy Survey (DES) aims
to address the questions: why is the expansion speeding up? Is cosmic
acceleration due to dark energy or does it require a modification of
General Relativity? If dark...
Hartmut Sadrozinski
(SCIPP- UC Santa Cruz)
16/08/2013, 14:30
We propose to develop a fast, thin silicon sensor with gain capable to concurrently measure with high precision the space (~10 μm) and time (~10 ps) coordinates of a particle.
In collaboration with groups within RD50, we have measured charge multiplication with a gain of about 10, allowing to thin pixelated silicon sensors by at least a factor 10 by keeping the performance of thick...
Mr
Prabhakar Palni
(on behalf of the CDF collaboration)
16/08/2013, 14:50
Using data from proton-antiproton collisions at center of mass energy of 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Lambda_b* is presented in its fully reconstructed decay mode to Lambda_b0 pi+ pi- where Lambda_b0 decays to Lambda_c+ pi- with Lambda_c+ decays to p K- pi+. The analysis is based on a data sample corresponding to an...
Alexandre Beaulieu
(University of Victoria)
16/08/2013, 14:50
We present a set of preliminary and final results on tau branching fractions
and invariant mass spectra, and a search for the second class current decay
tau -> pi eta'(958) nu_tau.
The results include new studies of a large number of 3 and 5-prong tau decay modes,
either inclusive or classified according the hadronic resonance content (K0S, eta,
omega, etc.).
All results are based on the...
Matthew Moulson
(INFN Frascati)
16/08/2013, 14:50
The decay K+ -> pi+ nu nu-bar is highly suppressed in the Standard Model (SM), while its rate can be predicted with minimal theoretical uncertainty. The branching ratio for this decay is thus a sensitive probe of the flavor sector of the SM.; however, the smallness of this BR (8 x 10^-11) and challenging experimental signature make it very difficult to measure. The primary goal of the NA62...
Dr
James Imber
(SUNY at Stony Brook)
16/08/2013, 14:50
I report on studies to combine the three-flavour neutrino oscillation fits to the Super-Kamiokande atmospheric data and the T2K long baseline data. With the
establishment of large \sin^2(\theta_{13}) we now turn our attention to the
remaining undetermined parameters in the neutrino sector, the mass hierarchy,
\sin^2(\theta23) octant and \delta_{cp} phase. By probing these...
Prof.
Klaus Honscheid
(Ohio State University)
16/08/2013, 14:54
Starting this September the Dark Energy Survey collaboration will use 525 nights over five years with the Blanco 4-m telescope at CTIO to image 5000 square degrees of the sky in five optical filter bands. The primary science goal is to understand the properties of dark energy using four complementary techniques: galaxy cluster counts, weak lensing, angular power spectrum and type Ia...
Vitaliy Fadeyev
(SCIPP, UCSC)
16/08/2013, 14:55
We are pursuing a “slim edge” technology which allows a drastic reduction of inactive region along the perimeter of silicon detectors. Such reduction would benefit construction of large-area tracker and imaging systems. Key components of this method are surface scribing, cleaving, and passivation of the resulting sidewall. We will give an overview of the project, describe the on-going studies...
Mr
Doug Schaefer
(University of Pennsylvania)
16/08/2013, 15:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
In the summer of 2012, the ATLAS and CMS collaborations announced a
discovery of the Standard-Model-like (SM) Higgs boson. Experimental
focus has now shifted to precision measurements of properties of the
new particle, such as couplings and spin. The SM Higgs boson is
primarily produced via gluon fusion (GGF) and vector boson fusion
(VBF) processes. This contribution will summarize latest...
Mr
Keita Fukushima
(University of Hawaii at Manoa)
16/08/2013, 15:10
g-2 correction has been accurately measured in the E821 experiment at Brookhaven National Lab (BNL). Theoretical calculations of the loop corrections to the fermion bremsstrahlung predict the observations quite well. Yet there remains a $~10^-4% > 3\sigma$ difference between experiment and theory.
One way that this discrepancy can be interpreted is by new candidate particles running in the...
Dr
Jianming Bian
(University of Minnesota)
16/08/2013, 15:10
The NOvA experiment is a long-baseline accelerator based neutrino oscillation experiment. It uses the upgraded Fermilab NuMI beam and measures electron-neutrino appearance and muon-neutrino disappearance at its far detector in Ash River, Minnesota. Goals of the experiment include measurements of theta13, the neutrino-mass hierarchy and the CP-violating phase. NOvA has begun to take data this...
Dr
Anna Mazzacane
(Fermilab)
16/08/2013, 15:10
Precision measurement of the ultra-rare $K^+\to\pi^+\nu \bar\nu$ decay at Fermilab would be one of the most incisive probes of quark flavor physics this decade. Its dramatic reach for uncovering new physics is due to several important factors: The branching ratio is sensitive to most new physics models which extend the Standard Model to solve its considerable problems. The Standard Model...
Mr
Espen Eie Bowen
(Universitaet Zuerich (CH))
16/08/2013, 15:10
Rare b→sμ+μ– transitions that proceed via flavour changing neutral currents are suppressed in the SM and provide a sensitive probe of new physics contributions entering in competing diagrams. The dataset collected with the LHCb experiment has enabled measurements to be made in decays such as B→K*0μ+μ–, B+→K+μ+μ– and Bs→φμ+μ–. Particularly interesting are the angular and isospin asymmetries in...
Prof.
Klaus Honscheid
(Ohio State University)
16/08/2013, 15:18
During fall 2012 the Dark Energy Survey (DES) collaboration installed and commissioned DECam, a 570 mega-pixel optical and near-infrared camera with a large 3 sq. deg. field of view, set at the prime focus of the 4-meter Blanco telescope in CTIO, Chile. In the course of the next five years DECam will map an entire octant of the southern sky to unprecedented depth, measuring the position on the...
Zachary Galloway
(SCIPP, UCSC)
16/08/2013, 15:20
Inter channel shortening due to electron accumulation layer near silicon surface is a problem for any segmented p-type and double-sided n-type detectors. The standard approach for inter-strip or inter-pixel isolation is an implanted p-type barrier, implemented as either p-stop or p-spray. We present an alternative approach to the isolation problem, which features alumina deposition as a top...
Mr
Benjamin Cerio
(Duke)
16/08/2013, 15:20
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
With the discovery of the Standard-Model-like Higgs boson in the
summer of 2012, experimental focus has shifted to the measurement of
its properties. Higgs boson production via a vector boson fusion
(VBF) process is a direct consequence of the Higgs mechanism of
electroweak symmetry breaking. This process is directly sensitive to
the coupling of the Higgs boson to the weak vector gauge...
Ms
Kanika Sachdev
(University of Minnesota)
16/08/2013, 15:30
NOvA is a long-baseline neutrino oscillation experiment that will use the NuMI beam originating at Fermilab. NOvA enables the study of two oscillation channels: $\nu_{\mu}$ disappearance and $\nu_{e}$ appearance. It consists of two functionally identical detectors, the Near Detector (ND) at FNAL and the Far Detector (FD) near International Falls in Northern Minnesota. The ND will be used to...
Dr
Jared Yamaoka
(University of Hawaii)
16/08/2013, 15:30
Recent measurements of exclusive and inclusive B->X_s l+ l-
and b->s gamma decays are reported from Belle.
Dr
Emanuele Santovetti
(INFN - Roma Tor Vergata)
16/08/2013, 15:30
Studies of quarkonia production in the forward region provide important tests of NRQCD. The LHCb experiment has collected a dataset corresponding to an integrated luminosity of about 3 fb-l in proton-proton collisions at sqrt(s)= 7 and 8 TeV. We present studies of the production and polarisation of the J/psi, psi(2S) and chi_c charmonium states as well as those of Upsilon and chi_b bottomonia....
Mr
Omar Moreno
(Santa Cruz Institute for Particle Physics/University of California, Santa Cruz)
16/08/2013, 15:30
The Heavy Photon Search (HPS) is a new experiment at Jefferson Lab which will search for heavy $U(1)$ vector bosons (heavy/dark photons) in the mass range of 20 MeV/$c^2$ to 1 GeV/$c^2$. Dark photons in this mass range are theoretically favorable and may mediate dark matter interactions. The dark photon couples to electric charge through kinetic mixing with the photon, allowing its production...
Dr
Himansu Sahoo
(Argonne National Laboratory)
16/08/2013, 15:35
In this talk, I will present the development of a new prototype wireless data acquisition system with the intended application to read-out
instrumentation systems having thousands of channels. The data acquisition and control is based on a compliant implementation of 802.11 based
hardware and protocols. Our case study is for large detectors containing photomultiplier tubes. We have explored...
Dr
Lashkar Kashif
(University of Wisconsin-Madison)
16/08/2013, 15:40
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
The characterization of the new boson, discovered in the search for the SM Higgs boson, is currently a priority in high-energy physics. Determination of the J^P quantum numbers of the boson are vital to this end. In the ATLAS collaboration, analyses to discriminate between the J^P = 0+ vs 1+, 1- and 2+ states have been performed in the H->WW->lvlv channel using 21 fb-1 of data at a CM energy...
189.
Expected Sensitivities from the $\nu_{\mu}$ Disappearance Analysis using the NO$\nu$A Detector.
Mr
Michael Baird
(Indiana University)
16/08/2013, 15:50
The NO$\nu$A experiment is a neutrino oscillation experiment based out of Fermilab. It will use the newly upgraded NuMI beam line with one detector at Fermilab and a second 14 kton, liquid scintillator detector currently being constructed 810 km from Fermilab in northern Minnesota. The $\nu_{\mu}$ disappearance analysis can significantly improve the world's best measurement of $\theta_{23}$...
Betrand Echenard
(Caltech)
16/08/2013, 15:50
Among dark matter theories, the possibility of dark sector(s) has recently
received much attention. This class of models introduces a new dark sector
with WIMP-like dark matter particles charged under a new Abelian gauge
group. The corresponding gauge boson, dubbed a dark photon, must be
lighter than a few GeV to explain recent astrophysical and terrestrial
anomalies. The dark photon...
Mr
Mathieu Perrin-Terrin
(CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France)
16/08/2013, 15:50
Rare decays of beauty and charm hadrons and lepton flavour/number violating decays of tau leptons test the flavour structure of the underlying theory at the level of quantum corrections. They provide information on the couplings and masses of heavy virtual particles appearing as intermediate states. A review of recent results obtained by LHCb on these topics will be presented.
Dr
Rob Kutschke
(Fermilab)
16/08/2013, 15:50
The Mu2e experiment at Fermilab will search for coherent, neutrino-less conversion of muons into electrons in the Coulomb field of a nucleus with an improvement in sensitivity of a factor of 10,000 over existing limits. Such a lepton flavor-violating reaction probes new physics at a scale inaccessible with direct searches at either present or planned high
energy colliders. The experiment...
Dr
Marcelle Soares-Santos
(Fermilab)
16/08/2013, 15:54
Galaxy clusters are one of the four key cosmic acceleration probes used by the Dark Energy Survey (DES) to measure cosmological parameters with unprecedented precision. DES has recently completed commissioning of its instrument and accomplished a successful science verification data taking phase. The survey proper will soon begin. In this talk, I review the motivation for using clusters of...
Savanna Shaw
(Michigan State University)
16/08/2013, 16:00
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
We report the latest results from Higgs Boson studies at the D0 detector. We will place particular emphasis on measurements of Higgs properties, particularly spin and parity studies in bbbar final states, but also including cross sections and branching fractions in a wide range of possible Higgs production and decay modes.
Prof.
K.K. Gan
(The Ohio State University)
16/08/2013, 16:00
The LHC at CERN is now the highest energy and luminosity collider in the world. Upgrades to the accelerator are currently being planned to further increase the energy and luminosity. The detectors must be upgraded to take advantage of the planned accelerator upgrades. This requires the optical links to transmit data at much higher speed to handle the much increased luminosity. We will present...
Dr
Wei Chen
(University of Saskatchewan)
16/08/2013, 16:10
We have calculated the correlation functions of heavy quarkonium hybrid operators with various $J^{PC}$ quantum numbers to include QCD condensates up to dimension six.
As observed before, the dimension six condensates could stabilize the hybrid sum rules
and permit reliable mass predictions. After performing the QCD sum rule analysis, we
extract the masses of charmonium and bottomonium...
David Yaylali
(University of Hawaii)
16/08/2013, 16:10
Recent developments have suggested that the dark sector may be much more complex than previously imagined. As a result, models such as Dynamical Dark Matter --- in which there are multiple dark-matter components which are only semi-stable but nevertheless contribute non-trivially to $\Omega_{\rm CDM}$ --- merit further study. One interesting potential signal which arises in such contexts...
Chih-Hsiang Cheng
(Caltech)
16/08/2013, 16:10
Mu2e is a new experiment planned at Fermilab to study charged lepton flavor violation in muon to electron conversion in presence of a nucleus. Muons produced by 8-GeV protons on target are captured by an aluminum target and, if converting to an electron, generate a
signal of a 105 MeV monoenergetic electron. Mu2e is designed to reach a sensitivity of a few times 10^{-17} in the ratio of mu-e...
Prof.
Klaus Honscheid
(Ohio State University)
16/08/2013, 16:18
DECam is the newly commissioned imager of the Dark Energy Survey (DES)with a very large Field-of-View (FoV) of more than 3 square degrees. During the DES science verification phase, we targeted four massive galaxy clusters visible from CTIO to measure their weak-lensing effect. We will present some of the first science-quality images from DECam and present the photometry and shape analysis...
Prof.
Richard Kass
(Ohio State)
16/08/2013, 16:25
The pixel detector of the ATLAS experiment is currently undergoing a major upgrade with the installation of a new layer of tracking and new service panels. As part of this upgrade an improved system of on-detector optical links is currently being installed in ATLAS. This new system incorporates lessons learned from the production and operation of the installed on-detector optical links...
Mr
haoshuang ji
(University of Wisconsin-Madison)
16/08/2013, 16:30
Electroweak Symmetry Breaking and the Higgs Sector
oral presentation
I present measurements of the properties of the newly discovered
boson using the full Run I pp collision dataset recorded
by the ATLAS experiment. The properties include the mass, signal strengths
and couplings of the boson as well as its spin/CP states.
I will discuss the details about the statistical combination of these property measurements from various decay channels and
present the...
Eric Braaten
(Ohio State University)
16/08/2013, 16:30
Flavor-exotic tetraquark mesons have recently been observed in the heavy-quark pair sectors of QCD, including two isospin multiplets in the b b-bar sector, Z_b(10610) and Z_b(10650), and one isospin multiplet in the c c-bar sector, Z_c(3900). We identify Z_b and Z_c as tetraquark mesons that are analogs of quarkonium hybrids with the gluon field replaced by an isospin-1 excitation of the...
Kurtis Nishimura
(SLAC)
16/08/2013, 16:30
We report Belle results on missing energy decays such as
B->tau nu, B->D* tau nu as well other recent results on
semileptonic decays (e.g. B->pi/rho l nu with tags)
Mr
Alexander Radovic
(University College London)
16/08/2013, 16:30
The observation of neutrino oscillation provided the first evidence for physics beyond the standard model. MINOS has been one of the foremost experiments in the field. Pioneering the two-detector technique, the MINOS long-baseline oscillation experiment has made several world-class neutrino oscillation measurements, not only making the most precise measure of the largest neutrino mass...
Prof.
Roland Allen
(Department of Physics and Astronomy, Texas A&M University)
16/08/2013, 16:30
The present talk is based on arXiv:1101.0586 [hep-th], with some clarifications and additions, and a greater emphasis on the connection to standard physics. There has always been a remarkably close relationship between the partition function of statistical physics and the path integral of field theory. Here we argue that this is no coincidence, and that nature can be interpreted as a...
Mr
Ryan Berg
(University of Saskatchewan)
16/08/2013, 16:50
We use QCD Laplace sum-rules to predict ground state masses for $J^{PC}=0^{+-}$ and $J^{PC}=1^{--}$ strangeonium hybrids. In our calculations, we include contributions stemming from perturbation theory, 4d quark and gluon condensates, the 5d mixed condensate, and 6d quark and gluon condensates. These two $J^{PC}$-channels are of particular phenomenological interest as the Y(2175) has quantum...
Dr
Adam Aurisano
(University of Cincinnati)
16/08/2013, 16:50
A new search for disappearance of active neutrinos over a baseline of 735 km was conducted using the NuMI neutrino beam and the MINOS detectors. The data analyzed correspond to an exposure of 10.56e20 protons-on-target. The neutral-current candidate spectrum measured at the Far Detector is compared with predictions assuming standard mixing between three active neutrino flavors. Both...
Prof.
Klaus Honscheid
(Ohio State University)
16/08/2013, 17:06
Weak lensing measurements are expected to be powerful probes of the physics of the dark sector. While the shear component of the lensing distortion has been detected and analyzed in several studies to date, the magnification component has received relatively little attention. We will show how an understanding of galaxy-scale physics can be used to dramatically improve both the systematic and...
Ms
Rui Wang
(University of New Mexico)
16/08/2013, 17:10
We present a study of the B-hadron family production and spectroscopy. We reconstruct B ground states in the hadronic decay modes with a J/psi in the final state. Some relevant excited states are reconstructed through the hadronic transitions. This study is based on 4.8fb^-1 2011 7TeV and 19.2fb^-1 2012 8TeV datasets collected by the ATLAS detector.
Mr
Mike Shaevitz
(Columbia University)
16/08/2013, 17:10
The IsoDAR experiment uses a novel isotope decay-at-rest (DAR) source of electron antineutrinos produced using protons from a 60 MeV cyclotron. Paired with the KamLAND detector, the experiment can observe over 800,000 inverse beta-decay events in five years and perform a decisive test of the current hints for sterile neutrino oscillations. Daedalus is a phased program leading to a...
Dr
Marina Artuso
(CERN)
17/08/2013, 10:10
Prof.
Robin Erbacher
(UC Davis)
17/08/2013, 10:50
Ann Nelson
(Washington)
17/08/2013, 14:40
Prof.
Richard Hill
(University of Chicago)
Field and String Theory
oral presentation
Employing induced representations of the Lorentz group (Wigner's little group construction), formalism for constructing heavy particle effective Lagrangians is developed, and Lagrangian constraints enforcing Lorentz invariance of the S matrix are derived. The relationship between Lorentz invariance and reparameterization invariance is established and it is shown why a standard ansatz for...
Prof.
Alakabha Datta
(University of Mississippi)
Quark and Lepton Flavor Physics
oral presentation
We perform a comprehensive study of the impact of new-physics operators with different Lorentz structures on $\bar{B} -> D^{(*)} l^- \bar{\nu}_l$ decays, $\ell = e^-, \mu^-, \tau^- $, involving the $b \to c l \nu_\ell$ transition. We present the full three angle and $q^2$ angular distribution with new physics operators with complex couplings. Various observables are constructed from the...
Mr
Mikhail Solon
(University of Chicago Physics)
Physics Beyond the Standard Model
oral presentation
Particles that are heavy compared to the electroweak scale ($M \gg m_W$), and that are charged under electroweak SU(2) gauge interactions display universal properties such as a characteristic fine structure in the mass spectrum induced by electroweak symmetry breaking, and an approximately universal cross section for scattering on nuclear targets. The heavy particle effective theory framework...
