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 soft electron **b**-tagging 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 soft electron **b**-tagging
Author
Faculty/Department
Faculty of Sciences. 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) :9 , p. 092002,1-092002,18
ISSN
0556-2821
ISI
000278145100006
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present a measurement of the top-quark pair-production cross section in pp&#773; collisions at √s=1.96  TeV using a data sample corresponding to 1.7  fb-1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt&#773; events in the lepton+jets channel, consisting of eν+jets and μν+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (soft electron tags). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51±3 events, corresponding to a cross section of σtt&#773; =7.8±2.4(stat)±1.6(syst)±0.5(lumi)  pb. We assume a top-quark mass of 175  GeV/c2. This is the first measurement of the tt&#773; cross section with soft electron tags in run II of the Tevatron.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/2e8250/7b38968b.pdf
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