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Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV

Abstract : The production cross section for a W boson and two b jets is measured using proton-proton collisions at sqrt(s) = 7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity of 5.0 inverse femtobarns. The W+b b-bar events are selected in the W to mu nu decay mode by requiring a muon with transverse momentum pt>25 GeV and pseudorapidity abs(eta)<2.1, and exactly two b-tagged jets with pt>25 GeV and abs(eta)<2.4. The measured W+b b-bar production cross section in the fiducial region, calculated at the level of final-state particles, is sigma(pp to W+b b-bar) B(W to mu nu)=0.53 +/- 0.05 (stat.) +/- 0.09 (syst.) +/- 0.06 (theo.) +/- 0.01 (lum.) pb, in agreement with the standard model prediction. In addition, kinematic distributions of the W+b b-bar system are in agreement with the predictions of a simulation using MADGRAPH and PYTHIA.
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http://hal.in2p3.fr/in2p3-00925482
Contributor : Sylvie Flores <>
Submitted on : Wednesday, January 8, 2014 - 10:35:54 AM
Last modification on : Friday, June 5, 2020 - 10:52:06 AM

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S. Chatrchyan, S. Baffioni, F. Beaudette, L. Benhabib, M. Bluj, et al.. Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV. Physics Letters B, Elsevier, 2014, 735, pp.204-225. ⟨10.1016/j.physletb.2014.06.041⟩. ⟨in2p3-00925482⟩

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