/ hep-ex CMS-SMP-14-020

Measurement of the production cross section of the W boson in association with two b jets in pp collisions at sqrt(s) = 8 TeV

Abstract: The production cross section of a W boson in association with two b jets is measured using a sample of proton-proton collisions at sqrt(s) = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 inverse femtobarns. The W bosons are reconstructed via their leptonic decays, W to l nu, where l= mu or e. The fiducial region studied contains exactly one lepton with transverse momentum pt[l]>30 GeV and pseudorapidity abs(eta[l])<2.1, with exactly two b jets with pt>25 GeV and abs(eta)<2.4 and no other jets with pt>25 GeV and abs(eta)<4.7. The cross section is measured to be {sigma (pp to W (l nu)+ bbbar)= 0.64 +/- 0.03 (stat) +/- 0.10 (syst) +/- 0.06 (theo) +/- 0.02 (lumi) pb, in agreement with standard model predictions.

Note: *Temporary entry*; Submitted to EPJC

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