# Measurement of the production cross section of a W boson in association with two b jets in pp collisions at $\sqrt{s} = 8$ TeV

CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarestad, Thea; Caminada, Lea; De Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hinzmann, Andreas; Hreus, Tomas; Ngadiuba, Jennifer; Pinna, Deborah; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Zucchetta, Alberto; et al (2017). Measurement of the production cross section of a W boson in association with two b jets in pp collisions at $\sqrt{s} = 8$ TeV. European Physical Journal C - Particles and Fields, C77(2):92.

## 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 $\sqrt{s} = 8$ 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 $p^ℓ_T$>30GeV and pseudorapidity |$η^ℓ$|<2.1, with exactly two b jets with $p_T$>25GeV and |η|<2.4 and no other jets with $p_T$>25GeV and |η|<4.7. The cross section is measured to be σ(pp→W(ℓν)+$b \overline b$)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.

## 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 $\sqrt{s} = 8$ 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 $p^ℓ_T$>30GeV and pseudorapidity |$η^ℓ$|<2.1, with exactly two b jets with $p_T$>25GeV and |η|<2.4 and no other jets with $p_T$>25GeV and |η|<4.7. The cross section is measured to be σ(pp→W(ℓν)+$b \overline b$)=0.64±0.03(stat)±0.10(syst)±0.06(theo)±0.02(lumi)pb, in agreement with standard model predictions.

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