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Compact Muon Solenoid
LHC, CERN

CMS-PAS-HIN-13-007
Study of W boson production in pPb collisions at sqrt(sNN) = 5.02 TeV
Abstract: This document reports on measurements of $W$ bosons produced in pPb collisions at nucleon-nucleon centre-of-mass energy $\sqrt{s\rm{_{NN}}}=5.02$ TeV with the CMS detector. The analysis has been performed in the muon plus neutrino and in the electron plus neutrino channels, using a data sample with integrated luminosity of 34.6 nb$^{-1}$. For leptons of transverse momentum higher than 25 GeV/$c$, the differential cross sections, lepton-charge and forward/backward asymmetries are computed as a function of the lepton pseudorapidity. Some of these observables deviate from expectations based on unmodified nucleon parton distribution functions. They set significant constraints on the nuclear modifications of parton densities.
Compact Muon Solenoid
LHC, CERN