Measurement of associated production of a W boson and a charm quark in proton-proton collisions at √<i>s</i>=13 Tev



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Dragicevic, M, Eroe, J, Escalante Del Valle, A
et al (show 2289 more authors) (2019) Measurement of associated production of a W boson and a charm quark in proton-proton collisions at √<i>s</i>=13 Tev. EUROPEAN PHYSICAL JOURNAL C, 79 (3). 269-.

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Abstract

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 Te . 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 + π ± → K ∓ + π ± + π ± . A cross section is measured in the fiducial region defined by the muon transverse momentum p T μ > 26 Ge , muon pseudorapidity | η μ | < 2.4 , and charm quark transverse momentum p T c > 5 Ge . The inclusive cross section for this kinematic range is σ ( W + c ) = 1026 ± 31 (stat) + 76 - 72 (syst) 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.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 07 May 2019 10:21
Last Modified: 24 Jan 2024 13:13
DOI: 10.1140/epjc/s10052-019-6752-1
Open Access URL: https://doi.org/10.1140/epjc/s10052-019-6752-1
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3040059