Measurement of the tt7̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification

Gurtu, A. (2011) Measurement of the tt7̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification Physical Review D - Particles, Fields, Gravitation and Cosmology, 84 (9). 092004_1-092004_24. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v84/i9/e092004

Related URL: http://dx.doi.org/10.1103/PhysRevD.84.092004

Abstract

A new measurement of the inclusive production cross section for pp→tt̅ 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 tt̅ 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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:92362
Deposited On:30 May 2012 09:19
Last Modified:15 Oct 2019 09:33

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