Bulletin of the American Physical Society
2009 APS April Meeting
Volume 54, Number 4
Saturday–Tuesday, May 2–5, 2009; Denver, Colorado
Session H9: Mini-Symposium on Single Top |
Hide Abstracts |
Sponsoring Units: DPF Chair: Elizaveta Shabalina, Universitaet Goettingen Room: Governor's Square 11 |
Sunday, May 3, 2009 10:45AM - 11:21AM |
H9.00001: Measurements of single top Invited Speaker: We present a status of the single top quark search at the Fermilab Tevatron proton-antiproton collider. We review multivariate techniques used by the D0 and CDF collaborations to separate a small signal from the background and present results obtained with their combination. We also present the searches beyond the standard model performed using single top events. [Preview Abstract] |
Sunday, May 3, 2009 11:21AM - 11:33AM |
H9.00002: Using Boosted Decision Trees to Search for Single Top Quark Events at the DZero Experiment Ann Heinson We present the results of a search for single top quark production at the DZero experiment at the Fermilab Tevatron proton-antiproton collider using boosted decision trees to separate signal from background. [Preview Abstract] |
Sunday, May 3, 2009 11:33AM - 11:45AM |
H9.00003: Using Bayesian Neural Networks to Search for Single Top Quark Events at the DZero Experiment Cecilia Gerber We present the results of a search for single top quark production at the DZero experiment at the Fermilab Tevatron proton-antiproton collider using Bayesian neural networks to separate signal from background. [Preview Abstract] |
Sunday, May 3, 2009 11:45AM - 11:57AM |
H9.00004: Using Matrix Elements to Search for Single Top Quark Events at the DZero Experiment Monica Pangilinan We present the results of a search for single top quark production at the DZero experiment at the Fermilab Tevatron proton-antiproton collider using matrix elements to separate signal from background. [Preview Abstract] |
Sunday, May 3, 2009 11:57AM - 12:09PM |
H9.00005: Search for Anomalous Top Quark Couplings at D0 Reinhard Schwienhorst Anomalous Wtb couplings modify the angular correlations of the top quark decay products and change the single top quark production cross section. We present limits on anomalous top quark couplings by combining information from W boson helicity measurements in top quark decays and anomalous coupling searches in the single top quark final state. We set limits on right-handed vector couplings as well as left-handed and right-handed tensor couplings based on data collected by the D0 experiment. [Preview Abstract] |
Sunday, May 3, 2009 12:09PM - 12:21PM |
H9.00006: Measurement of the polarization of singly-produced top quarks in CDF Ji-Eun Jung We present a measurement of the polarization of singly-produced top quarks in $p\bar p$ collisions using 3 $fb^{-1}$ of data collected with the CDF detector. Single top quarks are expected to be produced via virtual $W$ boson exchange in $t$-channel and $s$-channel processes. The standard model predicts a left-handed vector coupling at the $Wtb$ vertex, but extensions allow a right-handed vector coupling. We measure separately the left- and right-handed couplings, and thus the polarization, by measuring the angular distributions of the top quark's decay products. [Preview Abstract] |
Sunday, May 3, 2009 12:21PM - 12:33PM |
H9.00007: Measurement of the single top cross section Bruno Casal We present recent results from searches for single-top-quark production and single-top polarization studies using 3.2 $fb^{-1}$ of data accumulated with the CDF detector at the Fermilab Tevatron. We select events with one charged lepton, large missing transverse energy, and two or three jets, where at least one jet is identified as a b-quark jet using displaced secondary-vertex information from the CDF silicon detector. We employ a boosted decision tree analysis technique and a neural-network jet-flavor separator to improve separation of signal and background and greatly improve the sensitivity of our search. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700