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.
http://hal.in2p3.fr/in2p3-01357547
Contributeur : Sylvie Flores
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Soumis le : mardi 30 août 2016 - 10:07:05
Dernière modification le : jeudi 10 mai 2018 - 01:58:59
V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the production cross section of the W boson in association with two b jets in pp collisions at sqrt(s) = 8 TeV. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2017, 77, pp.92. 〈10.1140/epjc/s10052-016-4573-z〉. 〈in2p3-01357547〉
