Publication
Title
Search for single top quark production in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV in the missing transverse energy plus jets topology
Author
Institution/Organisation
CDF Collaboration
Abstract
 We report a search for single top quark production with the CDF II detector using 2.1  fb-1 of integrated luminosity of pp̅ collisions at √s=1.96  TeV. The data selected consist of events characterized by large energy imbalance in the transverse plane and hadronic jets, and no identified electrons and muons, so the sample is enriched in W→τν decays. In order to suppress backgrounds, additional kinematic and topological requirements are imposed through a neural network, and at least one of the jets must be identified as a b quark jet. We measure an excess of signal-like events in agreement with the standard model prediction, but inconsistent with a model without single top quark production by 2.1 standard deviations (σ), with a median expected sensitivity of 1.4σ. Assuming a top quark mass of 175  GeV/c2 and ascribing the excess to single top quark production, the cross section is measured to be 4.9-2.2+2.5(stat+syst)  pb, consistent with measurements performed in independent data sets and with the standard model prediction.
Language
English
Source (journal)
Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Ridge, N.Y. : American Physical Society , 2010
ISSN
1550-7998 [print]
1550-2368 [online]
Volume/pages
81 :7 (2010) , p. 072003,1-072003,24
Article Reference
072003
ISI
000277201900007
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address