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 = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb−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 pTl > 30 GeV and pseudorapidity |η|l < 2.1, with exactly two b jets with pT > 25 GeV and |η| < 2.4 and no other jets with pT > 25 GeV 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.
Measurement of the production cross section of a W boson in association with two b jets in pp collisions at √s=8TeV
Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Ravera, F.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;
2017-01-01
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 = 8 TeV collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8 fb−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 pTl > 30 GeV and pseudorapidity |η|l < 2.1, with exactly two b jets with pT > 25 GeV and |η| < 2.4 and no other jets with pT > 25 GeV 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.| File | Dimensione | Formato | |
|---|---|---|---|
|
10.1140%2Fepjc%2Fs10052-016-4573-z.pdf
Accesso aperto
Tipo di file:
PDF EDITORIALE
Dimensione
1.46 MB
Formato
Adobe PDF
|
1.46 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.



