Title
Search for single top quark production in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV in the missing transverse energy plus jets topologySearch for single top quark production in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV in the missing transverse energy plus jets topology
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
Lancaster, Pa,
Subject
Physics
Source (journal)
PHYSICAL REVIEW D
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
81(2010):7, p. 072003,1-072003,24
ISSN
0556-2821
ISI
000277201900007
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We report a search for single top quark production with the CDF II detector using 2.1  fb-1 of integrated luminosity of pp&#773; 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.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/0b1553/27d577c4.pdf
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