Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 82, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-022-10897-7
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- BMBWF (Austria)
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- Horizon 2020 Grant (European Union) [675440, 724704, 752730, 758316, 765710, 824093, 884104]
- COST Action (European Union) [CA16108]
- Leventis Foundation
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- Beijing Municipal Science & Technology Commission [Z191100007219010]
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- Deutsche Forschungsgemeinschaft (DFG) [EXC 2121, 390833306, 400140256 - GRK2497]
- Lendulet (Momentum) Programme of the Hungarian Academy of Sciences
- Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences
- New National Excellence Program UNKP
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- Council of Science and Industrial Research, India
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- Fundacao para a Ciencia e a Tecnologia (Portugal) [CEECIND/01334/2018]
- National Priorities Research Program by Qatar National Research Fund
- Ministry of Science and Higher Education [14.W03.31.0026, FSWW-2020-0008]
- Russian Foundation for Basic Research (Russia) [19-42-703014]
- ERDF a way of making Europe (Spain)
- Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu (Spain) [MDM-2017-0765]
- Stavros Niarchos Foundation (Greece)
- Rachadapisek Sompot Fund for Postdoctoral Fellowship (Thailand)
- Chulalongkorn University (Thailand)
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- Kavli Foundation
- Nvidia Corporation
- SuperMicro Corporation
- Welch Foundation [C-1845]
- Weston Havens Foundation (USA)
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This study reports the associated production of a W boson and a charm quark in proton-proton collisions. The analysis measures the cross section and branching fraction of this process and evaluates its impact on the determination of strange quark distribution.
Measurements of the associated production of a W boson and a charm (c) quark in proton-proton collisions at a centre-of-mass energy of 8 TeV are reported. The analysis uses a data sample corresponding to a total integrated luminosity of 19.7 fb(-1) collected by the CMS detector at the LHC. The Wbosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm quark jets are selected using distinctive signatures of charm hadron decays. The product of the cross section and branching fraction sigma(pp -> W + c + X)B(W -> l nu), where l = e or mu, and the cross section ratio sigma(pp -> W+ + (c) over bar + X)/sigma(pp -> W- + c + X) are measured in a fiducial volume and differentially as functions of the pseudorapidity and of the transverse momentum of the lepton from theWboson decay. The results are compared with theoretical predictions. The impact of these measurements on the determination of the strange quark distribution is assessed.
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