Adam, W.Bergauer, T.Dragicevic, M.Eroe, J.Friedl, M.Fruehwirth, R.Ghete, V. M.2025-03-072025-03-0720150370-26931873-2445https://doi.org/10.1016/j.physletb.2015.09.057https://hdl.handle.net/20.500.12507/2808The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 nb(-1) at a nucleon-nucleon centre-of-mass energy of root(NN)-N-S = 5.02 TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward-backward asymmetries are measured for leptons of transverse momentum exceeding 25 GeV/c, and as a function of the lepton pseudorapidity in the vertical bar eta(lab)vertical bar < 2.4 range. Deviations from the expectations based on currently available parton distribution functions are observed, showing the need for including W boson data in nuclear parton distribution global fits. (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.eninfo:eu-repo/semantics/openAccessCMSW bosonpPb collisionsArticle750565586WOS:0003642506000862-s2.0-8503580644310.1016/j.physletb.2015.09.057Q1Q1