Study of W boson production in pPb collisions at √sNN = 5.02 TeV

CMS Collaboration

doi:10.1016/j.physletb.2015.09.057

Study of W boson production in pPb collisions at √sNN = 5.02 TeV

CMS Collaboration

Research output: Contribution to journal › Article › Research › peer-review

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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 34.6nb⁻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 |η_lab| < 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.

Original language	English
Pages (from-to)	565-586
Number of pages	22
Journal	Physics Letters B
Volume	750
DOIs	https://doi.org/10.1016/j.physletb.2015.09.057
Publication status	Published - 2015
Externally published	Yes

Keywords

CMS
W boson
pPb collisions

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10.1016/j.physletb.2015.09.057

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Cite this

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title = "Study of W boson production in pPb collisions at √sNN = 5.02 TeV",

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 34.6nb−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.",

keywords = "CMS, W boson, pPb collisions",

author = "J Nash and \{CMS Collaboration\}",

year = "2015",

doi = "10.1016/j.physletb.2015.09.057",

language = "English",

volume = "750",

pages = "565--586",

journal = "Physics Letters B",

issn = "0370-2693",

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T1 - Study of W boson production in pPb collisions at √sNN = 5.02 TeV

AU - Nash, J

AU - CMS Collaboration

PY - 2015

Y1 - 2015

N2 - 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 34.6nb−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.

AB - 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 34.6nb−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.

KW - CMS

KW - W boson

KW - pPb collisions

U2 - 10.1016/j.physletb.2015.09.057

DO - 10.1016/j.physletb.2015.09.057

M3 - Article

SN - 0370-2693

VL - 750

SP - 565

EP - 586

JO - Physics Letters B

JF - Physics Letters B

ER -