The production cross section for a W boson and two b jets is measured using proton–proton collisions at View the MathML sources=7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity of 5.0 fb−1. The View the MathML sourceW+bb¯ events are selected in the W→μνW→μν decay mode by requiring a muon with transverse momentum pT>25 GeVpT>25 GeV and pseudorapidity |η|<2.1|η|<2.1, and exactly two b-tagged jets with pT>25 GeVpT>25 GeV and |η|<2.4|η|<2.4. The measured View the MathML sourceW+bb¯ production cross section in the fiducial region, calculated at the level of final-state particles, is View the MathML sourceσ(pp→W+bb¯)×B(W→μν)=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 View the MathML sourceW+bb¯ system are in agreement with the predictions of a simulation using MadGraph and pythia.

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

CANDELISE, VIERI;DELLA RICCA, GIUSEPPE;LA LICATA, CHIARA;MARONE, MATTEO;MONTANINO, DAMIANA;SCHIZZI, ANDREA;UMER, TOMO;
2014

Abstract

The production cross section for a W boson and two b jets is measured using proton–proton collisions at View the MathML sources=7 TeV in a data sample collected with the CMS experiment at the LHC corresponding to an integrated luminosity of 5.0 fb−1. The View the MathML sourceW+bb¯ events are selected in the W→μνW→μν decay mode by requiring a muon with transverse momentum pT>25 GeVpT>25 GeV and pseudorapidity |η|<2.1|η|<2.1, and exactly two b-tagged jets with pT>25 GeVpT>25 GeV and |η|<2.4|η|<2.4. The measured View the MathML sourceW+bb¯ production cross section in the fiducial region, calculated at the level of final-state particles, is View the MathML sourceσ(pp→W+bb¯)×B(W→μν)=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 View the MathML sourceW+bb¯ system are in agreement with the predictions of a simulation using MadGraph and pythia.
http://www.sciencedirect.com/science/article/pii/S0370269314004468
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2738298
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