Title
Measurement of the <tex>$t\bar{t}$</tex> production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identificationMeasurement of the <tex>$t\bar{t}$</tex> production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification
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 : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
84(2011):9, p. 1-24
ISSN
0556-2821
ISI
000297124000003
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A new measurement of the inclusive production cross section for pp→tt&#773; is performed at a center-of-mass energy of 7 TeV using data collected by the CMS experiment at the LHC. The analysis uses a data sample corresponding to an integrated luminosity of 36  pb-1, and is based on the final state with one isolated, high transverse momentum muon or electron, missing transverse energy, and hadronic jets. The tt&#773; content of the selected events is enhanced by requiring the presence of at least one jet consistent with b-quark hadronization. The measured cross section is 150±9(stat)±17(syst)±6(lumi)  pb and is in agreement with higher-order QCD calculations. The combination of this measurement with a previous CMS result based on dileptons gives 154±17(stat+syst)±6(lumi)  pb.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/a26609/22daa72f.pdf
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