Study of W boson production in pPb collisions at root(NN)-N-S=5.02 TeVopen access
- Authors
- Adam, W; Bergauer, T; Dragicevic, M; Eroe, J; Friedl, M; Fruhwirth, R; Ghete, VM; Hartl, C; Hormann, N; Kim, Tae Jeong
- Issue Date
- Nov-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- CMS; pPb collisions; W boson
- Citation
- PHYSICS LETTERS B, v.750, pp.565 - 586
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS LETTERS B
- Volume
- 750
- Start Page
- 565
- End Page
- 586
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142875
- DOI
- 10.1016/j.physletb.2015.09.057
- ISSN
- 0370-2693
- 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 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.
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