Go to the Indico Home Page Up to category Newer event Newest event
 
Focus on:  Hide Contributions
  • Indico style
  • Indico style - inline minutes
  • Indico style - numbered
  • Indico style - numbered + minutes
  • Indico Weeks View
    • Switch to the management area of this event
    Login

    Dark Interactions: Perspectives from Theory and Experiment

    11–13 Jun 2014
    Brookhaven National Laboratory
    US/Eastern timezone

    Workshop Coordinator

    Contribution List

    42 out of 42 displayed
    Export to PDF
    1. 0. Theoretical Motivation for New Weakly Coupled States (includes axions, sub-MeV dark photons, ALPs, etc.)
      Neal Weiner (NYU)
      11/06/2014, 09:00
    2. 1. Theory and Phenomenology of Dark Vector Bosons
      David Morrissey (TRIUMF)
      11/06/2014, 09:40
      New physics can be light relative to the electroweak scale provided it couples very weakly to the Standard Model. An attractive and well-motivated example of this is a new dark vector boson. In this talk I will cover the theory of dark vectors with an emphasis on kinetic mixing with the photon and mass mixing with the Z boson. I will also touch briefly on the experimental implications of...
      Go to contribution page
    3. 2. Discussion
      11/06/2014, 10:20
    4. 3. Dark Light
      Charles Epstein (MIT)
      11/06/2014, 11:00
      The DarkLight experiment aims to search for a dark photon in the low mass region 10-100 MeV/c^2. By using the Jefferson Lab FEL’s high-intensity 100 MeV, 1 MW electron beam incident on a gaseous hydrogen target, the process ep -> ep,e+/e- will be studied. To search for a dark photon, full track reconstruction of the four-particle final state will be performed in order to observe a resonance on...
      Go to contribution page
    5. 4. APEX - The APrime EXperiment at Jefferson Lab
      James Beacham (New York University)
      11/06/2014, 11:20
      APEX is a fixed target experiment in Experimental Hall A at Thomas Jefferson National Accelerator Facility (JLab) in Virginia, USA, that is designed to search for a new gauge boson (A') with sub-GeV mass and coupling to ordinary matter of g'/e ~ (1 - 10^-4). Electrons impinge upon a fixed target of high-Z material to produce an A' via a process analogous to photon bremsstrahlung. The A' then...
      Go to contribution page
    6. 5. HPS -- The Heavy Photon Search Experiment at JLab
      John A Jaros (SLAC National Accelerator Laboratory)
      11/06/2014, 11:40
      HPS is an new experiment at Jefferson Laboratory designed to look for hidden sector photons in the mass range 20 - 1000 MeV with couplings a'/a in the range 10-5 to 10-10. Presently under construction, HPS will be installed this fall in Hall B at JLab, commission thereafter, and take data in 2015. Heavy photons are identified as invariant mass bumps and as separated decay verticies. The...
      Go to contribution page
    7. 6. Mainz MAMI
      Michael Distler (University Mainz, Germany)
      11/06/2014, 12:00
      The A1 collaboration at the Mainz Microtron has concluded a pilot study in 2011 and data taking periods in 2012/2013 to search for a dark photon. The focus of the experiment was on the mass range between 50-200 MeV where dark matter provides a possible explanation for the discrepancy in the anomalous magnetic moment of the muon (g-2). The analysis is finished and the final exclusion limits...
      Go to contribution page
    8. 7. Discussion
      11/06/2014, 12:20
    9. 41. Workshop Group Photo
      11/06/2014, 12:30
    10. 8. Theory motivation for sub-GeV DM + searches at proton beam dumps
      Brian Batell (University of Chicago)
      11/06/2014, 14:00
    11. 9. Electron Beam Dump Experiments
      Philip Schuster (Perimeter Institute)
      11/06/2014, 14:30
    12. 10. Direct Detection Prospects
      Jeremy Mardon (Stanford)
      11/06/2014, 14:55
    13. 11. Discussion
      11/06/2014, 15:20
    14. 12. Search for Dark Photons and Higgs at BaBar
      Prof. David Brown (University of Louisville)
      11/06/2014, 16:00
      Extensions to the Standard Model allow for new particles, including low-mass Higgs bosons and dark photons, that may bridge the Standard Model to the Dark Sector. We present recent results of searches for such particles in electron-positron annihilation with the BaBar Detector at the SLAC National Accelerator Laboratory. We also report briefly on a measurement of antideuteron production at...
      Go to contribution page
    15. 13. Belle/Belle II
      Igal Jaegle (University of Hawaii at Manoa)
      11/06/2014, 16:20
      We will present a new Belle (preliminary) limit in the search for a dark photon, A, and a dark Higgs, h', with A and h' prompt, mh' > 2mA, 100 MeV < mA < 3.5 GeV and 200 MeV < mh' < 10.5 GeV. We will also discuss possible future contributions of Belle II to dark sector particle searches.
      Go to contribution page
    16. 14. Meson-Decay Experiments
      Elizabeth Worcester (BNL)
      11/06/2014, 16:40
      The dark photon couples to Standard Model particles via kinetic mixing, so it may be produced in SM processes and decay to SM particles. Experiments that are designed for precise measurements of meson decay and detection of rare meson decay have high-resolution detectors and large data samples, making them well suited to search for dark photons. I will describe limits on dark photons from...
      Go to contribution page
    17. 15. PHENIX Searches for Low Mass Dark Photons
      Yorito Yamaguchi (University of Tokyo)
      11/06/2014, 17:00
      Several theoretical models introduce an additional U(1) gauge boson, a "dark photon" which mixes with ordinary QED photons with very small mixing strength. The dark photon is considered as one of the strongest candidates to describe some astrophysical anomalies as well as the 3sigma deviation of the experimental muon g-2 value from the Standard Model calculation. The dark photon as the cause...
      Go to contribution page
    18. 16. Muon g-2 and dark parity violation
      Dr Hye-Sung Lee (College of William and Mary / Jefferson Lab)
      11/06/2014, 17:20
    19. 17. Exotic Higgs Decays (theory, various models)
      Ze'ev Surujon (Stony Brook University)
      12/06/2014, 09:00
      Exotic Higgs decays may be our main window to new physics. They are common and often well-motivated in various new physics scenarios, partly due to the small natural width of the Higgs. Some exotic decay modes are cascades resulting in high multiplicity of the final state, and are therefore potentially spectacular. Still, they could easily be missed, partly due to triggering...
      Go to contribution page
    20. 18. Higgs decays to exotic particles at CMS
      Aysen Tatarinov (Texas A&M University)
      12/06/2014, 09:30
      The results of searches for invisible decays of the Higgs boson in the vector boson fusion and associated ZH production modes, where Z decays to a pair of charged leptons or a bbbar quark pair, are presented. Searches performed using data collected in proton-proton collisions at center-of-mass energies of 7 TeV and 8 TeV by the CMS experiment at the LHC. With no excess of the observed data...
      Go to contribution page
    21. 19. Higgs decays to exotic particles at ATLAS
      Stefano Giagu (Sapienza University of Rome)
      12/06/2014, 09:55
      The discovery of a Higgs-like particle in ATLAS and CMS at the Large Hadron Collider opened a rich and interesting range of opportunities for discovery of exotic decays, i.e. decays that involve new light states beyond the SM. A large class of simplified and complete models gives rise to peculiar patterns of exotic decays of the Higgs boson, patterns that the ATLAS experiment is exploring...
      Go to contribution page
    22. 20. Charged Higgs probes of dark bosons
      Kyoungchul Kong (University of Kansas)
      12/06/2014, 10:20
      We suggest top quark decays as a venue to search for light dark force carriers. The top quark is the heaviest particle in the standard model whose decays are relatively poorly measured, allowing sufficient room for exotic decay modes from new physics. A very light (GeV scale) dark gauge boson (Z') is a recently highlighted hypothetical particle that can address some astrophysical anomalies as...
      Go to contribution page
    23. 21. Dark Matter searches at ATLAS
      Steven Schramm (University of Toronto)
      12/06/2014, 11:10
      Numerous independent astrophysical experiments have observed and measured the influence of the phenomenon named Dark Matter, but its nature is still unknown. If the assumption that Dark Matter is a particle which has a weak coupling to the Standard Model is valid, then collider searches have the ability to search for the production of this new Weakly Interacting Massive Particle (WIMP). Any...
      Go to contribution page
    24. 22. Dark Matter Searches at CMS
      Jordan Damgov (Texas Tech University)
      12/06/2014, 11:30
    25. 23. Searches for Hidden Valleys at ATLAS
      Gordon Watts (University of Washington)
      12/06/2014, 11:50
      Hidden Valley models contain a hidden sector that communicates with the Standard Model via a scalar. The hidden sector phenomenology is unconstrained. It can be as complex or simple as desired, and prompt or long lived. In this case we explore the ATLAS program to search for long lived versions of the Hidden Valley model. The benchmark model is fairly simple, produces two hidden valley pions...
      Go to contribution page
    26. 24. Searches for Hidden Valleys at CMS
      John Paul Chou (Rutgers University)
      12/06/2014, 12:10
    27. 25. SUSY Dark Matter searches at CMS
      Fedor Ratnikov (Inst. für Exp. Kernphysik)
      12/06/2014, 14:00
      In this talk I will discuss Implications of CMS Run 1 SUSY searches for the SUSY neutralino as a WIMP Dark Matter candidate
      Go to contribution page
    28. 26. SUSY Dark Matter searches at ATLAS
      Estel Perez Codina (TRIUMF)
      12/06/2014, 14:20
      Supersymmetry provides an excellent dark matter candidate. SUSY searches at ATLAS are sensitive to an extensive range of scenarios with either a neutralino or a gravitino as the lightest supersymmetric particle. In this talk I will present the latest results from analyses carried out using the Run 1 dataset collected by ATLAS at the LHC at 8 TeV center of mass energy.
      Go to contribution page
    29. 27. Search for exotic particles at LHCb
      James Philip Ilten (Massachusetts Institute of Technology)
      12/06/2014, 14:40
      LHCb, located on the LHC, is a fully instrumented forward detector with flexible triggers, low pileup, and excellent secondary vertex resolution which make it an ideal experiment to search for unique exotic signals. A review of current LHCb exotic particle searches is given. Searches for the anomalous decays of B-mesons and tau-leptons are presented, as well as direct searches through...
      Go to contribution page
    30. 28. Dark Photon Searches at ALICE
      Taku Gunji (Center for Nuclear Study, the University of Tokyo)
      12/06/2014, 15:00
      ALICE is one of the largest experiments at the Large Hadron Collider at CERN and is designed to study the physics of strongly interacting matter at extreme high temperature and energy densities created in high-energy heavy ion collisions. ALICE has a good potential to search for a dark photon signal in pi0 and eta Dalitz decays, thanks to the excellent resolution of the tracking system and the...
      Go to contribution page
    31. 29. Discussion
      12/06/2014, 15:20
    32. 30. Dark Matter Direct Detections
      Kathryn Zurek (University of Michigan)
      12/06/2014, 16:00
    33. 31. Dark matter annihilations in the Galactic Center
      Dan Hooper (Fermilab)
      12/06/2014, 16:30
      Past studies have identified a spatially extended excess of ~1-3 GeV gamma rays from the region surrounding the Galactic Center, consistent with the emission expected from annihilating dark matter. Recent improvements in the analysis techniques have found this excess to be robust and highly statistically significant, with a spectrum, angular distribution, and overall normalization that is in...
      Go to contribution page
    34. 32. CMB Constraints on Dark Matter Annihilation
      Neelima Sehgal (Stony Brook University)
      12/06/2014, 17:00
      The Cosmic Microwave Background (CMB) is a remarkably powerful and clean probe of dark matter annihilation. I will review the constraints from existing CMB and low-redshift data, and discuss future prospects from current and upcoming CMB experiments such as Planck and Advanced ACTpol. Many simple models designed to explain various indirect detection anomalies can be decisively tested with...
      Go to contribution page
    35. 33. Discussion
      12/06/2014, 17:20
    36. 34. Black hole portal into hidden valleys
      Sergei Dubovsky (New York University)
      13/06/2014, 09:00
      I will discuss electromagnetic signals of black hole superradiance in the presence of an axion coupled to a hidden QCD-like sector.
      Go to contribution page
    37. 36. ADMX
      Benjamin Brubaker (Yale University)
      13/06/2014, 09:30
      The axion is a well-motivated cold dark matter candidate first postulated to explain the absence of CP violation in strong interactions. Dark matter axions may be detected via their resonant conversion into photons in a high-Q microwave cavity permeated by a strong magnetic field. The Axion Dark Matter eXperiment (ADMX) has used this technique to exclude axion models in the few μeV mass range....
      Go to contribution page
    38. 35. Cosmic Axion Spin Precession Experiment (CASPEr)
      Surjeet Rajendran (Stanford)
      13/06/2014, 09:55
      We propose an experiment to search for QCD axion and axion-like-particle (ALP) dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment. In analogy with nuclear magnetic resonance, these moments cause precession of nuclear spins in a material sample in the presence of a background electric...
      Go to contribution page
    39. 37. Discussion
      13/06/2014, 10:20
    40. 38. Neutrinos and hidden physics (sterile neutrinos)
      Bryce Littlejohn (University Of Cincinnati)
      13/06/2014, 11:00
      The existence of sterile neutrinos has been presented as an explanation for many anomalous results in experimental astro-particle physics. This talk will discuss existing experimental indications for eV-scale sterile neutrinos, while surveying future prospects for resolving these hints at accelerator, reactor, and radioactive source neutrino experiments.
      Go to contribution page
    41. 39. Cosmology probes of dark sectors
      Kendrik Smith (Perimeter Institute)
      13/06/2014, 11:30
    42. 40. Concluding remarks and outlook
      Maxim Pospelov (University of Victoria)
      13/06/2014, 12:00

    Back to the event