Publication
Title
Measurement of the $t\overline{t}$ production cross section in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV using lepton+jets events with jet probability b-tagging
Author
Institution/Organisation
CDF Collaboration
Abstract
 We present a measurement of the tt̅ production cross section using events with one charged lepton and jets from pp̅ 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 tt̅ 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 tt̅ 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.
Language
English
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Lancaster, Pa : 2006
ISSN
0556-2821
Volume/pages
74:7(2006), p. 072006,1-072006,38
ISI
000241723900012
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Publication type Subject Affiliation Publications with a UAntwerp address