Study of W boson production in pPb collisions at √sNN = 5.02 TeV
Type :
Article
Publication Status :
published
Access :
openAccess
Abstract
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−1 at a nucleon–nucleon centre-of-mass energy of View the MathML source, 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.
Source :
Physics Letters B
Date :
2015-11-12
Volume :
750
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/4139http://www.sciencedirect.com/science/article/pii/S0370269315007327
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