Study of W boson production in pPb collisions at sNN=5.02 TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol.750, pp.565-586, 2015 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 750
- Publication Date: 2015
- Doi Number: 10.1016/j.physletb.2015.09.057
- Journal Name: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.565-586
- Keywords: CMS, W boson, pPb collisions, PARTON
- Anadolu University Affiliated: No
Abstract
© 2015 CERN for the benefit of the CMS CollaborationThe 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 sNN=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 |ηlab|<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.