Gürpınar Güler, Emine2023-03-142023-03-1420222313-3724https://doi.org/10.1140/epjc/s10052-022-10897-7Measurements of the associated production of a W boson and a charm (c) quark in proton–proton collisions at a centre-of-mass energy of 8 TeV are reported. The anal ysis uses a data sample corresponding to a total integrated luminosity of 19.7 fb?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 frac tion ? (pp ? W + c + X)B(W ? ?), where = e or ?, and the cross section ratio ? (pp ? W+ + ¯c + X)/? (pp ? W? + c + X) are measured in a fiducial volume and differ entially as functions of the pseudorapidity and of the trans verse 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.enArticle10.1140/epjc/s10052-022-10897-736507928Q4WOS:001044802200001Q2