Study of W boson production in pPb collisions at √ s NN = 5.02 TeV
Author(s)
The CMS Collaboration
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The 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 at a nucleon–nucleon centre-of-mass energy of 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 |η |<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. −1 NN lab
Date issued
2015Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Khachatryan, V., et al. "Study of W Boson Production in Ppb Collisions at vSnn = 5.02 Tev." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 750 (2015): 565-86.
Version: Final published version