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Title
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Measurement of associated production of a W boson and a charm quark in proton-proton collisions at =13 Tev
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| Measurements are presented of associated production of a W boson and a charm quark (W + c) in proton-proton collisions at a center-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 35.7 fb(-1) collected by the CMS experiment at the CERN LHC. The W bosons are identified by their decay into a muon and a neutrino. The charm quarks are tagged via the full reconstruction of D* (2010)(+/-) mesons that decay via D*(2010)(+/-) D-0 + pi(+/-) -> K--/+ + pi(+/-) + pi(+/-). A cross section is measured in the fiducial region defined by the muon transverse momentum p(T)(mu) > 26 GeV, muon pseudorapidity vertical bar eta(mu)vertical bar < 2.4, and charm quark transverse momentum p(T)(c) > 5 GeV. The inclusive cross section for this kinematic range is sigma(W + c) = 1026 +/- 31(stat)(-72)(+76) pb. The cross section is also measured differentially as a function of the pseudorapidity of the muon from the W boson decay. These measurements are compared with theoretical predictions and are used to probe the strange quark content of the proton. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2019
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-019-6752-1
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Volume/pages
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79
:3
(2019)
, 31 p.
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Article Reference
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269
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ISI
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000462253600001
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Pubmed ID
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30971865
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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