Measurements of the associated production of a W boson and a charm quark in proton–proton collisions at √s = 8 TeV
Abstract
Measurements of the associated production of a W boson and a charm (c) quark in proton–proton collisions at a centre-of-mass energy of 8TeV are reported. The analysis uses a data sample corresponding to a total integrated luminosity of 19.7fb−1 collected by the CMS detector at the LHC. The W bosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm quark jets are selected using distinctive signatures of charm hadron decays. The product of the cross section and branching fraction σ(pp→W+c+X)B(W→ℓν), where ℓ=e or μ, and the cross section ratio σ(pp→W++c¯+X)/σ(pp→W−+c+X) are measured in a fiducial volume and differentially as functions of the pseudorapidity and of the transverse momentum of the lepton from the W boson decay. The results are compared with theoretical predictions. The impact of these measurements on the determination of the strange quark distribution is assessed. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000590989Publication status
publishedExternal links
Journal / series
The European Physical Journal CVolume
Pages / Article No.
Publisher
SpringerOrganisational unit
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
09720 - de Cosa, Annapaola / de Cosa, Annapaola
Funding
758316 - Majorana neutrino discovery strategy with CMS (EC)
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