Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV
(2014) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B735, p. 204 (2014)
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- 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) x 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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CMS Collaboration, Basegmez, S., Beluffi, C., Bruno, G., Castello, R., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jez, P., Lemaitre, V., Liao, J., Nuttens, C., Pagano, D., et al. (2014). Measurement of the production cross section for a W boson and two b jets in pp collisions at sqrt(s) = 7 TeV. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B735, 204. https://doi.org/10.1016/j.physletb.2014.06.041 (Original work published 2014)