The production cross section of a W boson in association with two b jets is measured using a sample of protonâproton collisions at s=8TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8fb-1. The W bosons are reconstructed via their leptonic decays, W â âν, where â= μ or e. The fiducial region studied contains exactly one lepton with transverse momentum pTâ>30GeV and pseudorapidity | ηâ| < 2.1 , with exactly two b jets with pT>25GeV and | η| < 2.4 and no other jets with pT>25GeV and | η| < 4.7. The cross section is measured to be Ï(p p â W (âν) +bb¯)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.
Measurement of the production cross section of a W boson in association with two b jets in pp collisions at root s=8TeV
ALBERGO, Sebastiano Francesco;CHIORBOLI, MASSIMILIANO;COSTA, Salvatore;DI MATTIA, ALESSANDRO;GIORDANO, FERDINANDO;POTENZA, Renato Carlo;TRICOMI, Alessia Rita;TUVE', Cristina Natalina;
2017-01-01
Abstract
The production cross section of a W boson in association with two b jets is measured using a sample of protonâproton collisions at s=8TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8fb-1. The W bosons are reconstructed via their leptonic decays, W â âν, where â= μ or e. The fiducial region studied contains exactly one lepton with transverse momentum pTâ>30GeV and pseudorapidity | ηâ| < 2.1 , with exactly two b jets with pT>25GeV and | η| < 2.4 and no other jets with pT>25GeV and | η| < 4.7. The cross section is measured to be Ï(p p â W (âν) +bb¯)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.File | Dimensione | Formato | |
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Khachatryan2017_Article_MeasurementOfTheProductionCros.pdf
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