Prof.
Nikolaos Kidonakis
(Kennesaw State University)
15/08/2013, 08:30
Top Quark Physics
oral presentation
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
SungWoo YOUN
(Fermilab)
15/08/2013, 09:10
Top Quark Physics
oral presentation
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...
Mr
Paul Turner
(University of Illinois at Chicago for the CMS Collaboration)
15/08/2013, 10:30
Top Quark Physics
oral presentation
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
Ruchika Nayyar
(University of Arizona)
15/08/2013, 11:10
Top Quark Physics
oral presentation
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...
Craig Group
(U. Virginia and Fermilab), Mr
Hao Liu
(University of Virginia)
15/08/2013, 13:30
Top Quark Physics
oral presentation
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...
Matteo Cremonesi
(Oxford University)
15/08/2013, 14:10
Top Quark Physics
oral presentation
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...
Prof.
Philip Baringer
(University of Kansas)
15/08/2013, 16:00
Top Quark Physics
oral presentation
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...
Mr
Patrick True
(Michigan State University)
15/08/2013, 16:40
Top Quark Physics
oral presentation
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...
Mr
Elwin Martin
(Georgia Institute of Technology)
16/08/2013, 10:30
Top Quark Physics
oral presentation
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.
Dr
Joshua Berger
(SLAC)
16/08/2013, 11:10
Top Quark Physics
oral presentation
Minimal Flavor Violation in the up-type quark sector leads to particularly interesting phenomenology due to the interplay of flavor physics in the charm sector and collider physics from flavor changing processes in the top sector. We study the most general operators that can affect top quark properties and $D$ meson decays in this scenario, concentrating on two CP violating operators for...
