Title
Measurement of the <tex>$t\overline{t}$</tex> production cross section in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV using lepton+jets events with jet probability b-tagging
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
74(2006) :7 , p. 072006,1-072006,38
ISSN
0556-2821
ISI
000241723900012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present a measurement of the tt&#773; production cross section using events with one charged lepton and jets from pp&#773; collisions at a center-of-mass energy of 1.96 TeV. A b-tagging algorithm based on the probability of displaced tracks coming from the event interaction vertex is applied to identify b quarks from top decay. Using 318  pb-1 of data collected with the CDF II detector, we measure the tt&#773; production cross section in events with at least one restrictive (tight) b-tagged jet and obtain 8.9-1.0+1.0(stat)-1.0+1.1(syst)  pb. The cross section value assumes a top quark mass of mt=178  GeV/c2 in the acceptance corrections. The dependence of the cross section on mt is presented in the paper. This result is consistent with other CDF measurements of the tt&#773; cross section using different samples and analysis techniques, and has similar systematic uncertainties. We have also performed consistency checks by using the b-tagging probability function to vary the signal-to-background ratio and also using events that have at least two b-tagged jets.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/770db2/d629f675.pdf
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