Study of W boson production in pPb collisions at $s_NN =$ 5.02 TeV
Study of W boson production in pPb collisions at $s_NN =$ 5.02 TeV
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 sourcesNN=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|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.
565-586
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
28 September 2015
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
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 sourcesNN=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|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.
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Published date: 28 September 2015
Organisations:
Physics & Astronomy
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Local EPrints ID: 409646
URI: http://eprints.soton.ac.uk/id/eprint/409646
ISSN: 0370-2693
PURE UUID: db4ea744-5c09-400f-ba29-cf3bacc81607
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Date deposited: 01 Jun 2017 04:04
Last modified: 16 Mar 2024 03:54
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Contributors
Author:
Vardan Khachatryan
Corporate Author: The CMS Collaboration
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