The production cross section of a W boson in association with two b jets is measured using a sample of proton–proton 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→ℓν, where ℓ=μ or e. The fiducial region studied contains exactly one lepton with transverse momentum pℓT>30GeV and pseudorapidity |ηℓ|<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 σ(pp→W(ℓν)+bb¯¯¯)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.



Titolo: Measurement of the production cross section of a W boson in association with two b jets in pp collisions at sqrt(s) = 8 TeV
Autori: 
CANDELISE, VIERI
DELLA RICCA, GIUSEPPE
LA LICATA, CHIARA
SCHIZZI, ANDREA
mostra contributor esterni 
Data di pubblicazione: 2017
Stato di pubblicazione: Pubblicato
Rivista: 
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS  
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 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→ℓν, where ℓ=μ or e. The fiducial region studied contains exactly one lepton with transverse momentum pℓT>30GeV and pseudorapidity |ηℓ|<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 σ(pp→W(ℓν)+bb¯¯¯)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.
Handle: http://hdl.handle.net/11368/2893686
Digital Object Identifier (DOI): 10.1140/epjc/s10052-016-4573-z
URL: http://link.springer.com/article/10.1140/epjc/s10052-016-4573-z
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