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|a 10.1103/PhysRevD.105.072008
|2 doi
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|a koha001002109
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|b rus
|c RU-ToGU
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|a Precision measurement of the W boson decay branching fractions in proton-proton collisions at √s=13 TeV
|c A. Tumasyan, W. Adam, J. W. Andrejkovic [et al.]
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|a Текст
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|a электронный
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|a Библиогр.: 67 назв.
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|a The leptonic and inclusive hadronic decay branching fractions of the W boson are measured using proton-proton collision data collected at p s = 13 TeV by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 35.9 fb???1. Events characterized by the production of one or two W bosons are selected and categorized based on the multiplicity and flavor of reconstructed leptons, the number of jets, and the number of jets identified as originating from the hadronization of b quarks. A binned maximum likelihood estimate of the W boson branching fractions is performed simultaneously in each event category. The measured branching fractions of the W boson decaying into electron, muon, and tau lepton final states are (10.83 ?? 0.10)%, (10.94 ?? 0.08)%, and (10.77 ?? 0.21)%, respectively, consistent with lepton flavor universality for the weak interaction. The average leptonic and inclusive hadronic decay branching fractions are estimated to be (10.89 ?? 0.08)% and (67.32 ?? 0.23)%, respectively. Based on the hadronic branching fraction, three standard model quantities are subsequently derived: the sum of squared elements in the first two rows of the Cabibbo???Kobayashi???Maskawa (CKM) matrix Pij IVijI2 = 1.984 ?? 0.021, the CKM element IVcsI = 0.967 ?? 0.011, and the strong coupling constant at the W boson mass scale, ??S(m2W) = 0.095 ?? 0.033.
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|a протон-протонные столкновения
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|a W-бозоны
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|a лептоны
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|a топ-кварки
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|a статьи в журналах
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|a Tumasyan, Armen
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|a Adam, Wolfgang
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|a Andrejkovic, Janik Walter
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|a Borshch, Vladislav
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|a Ivanchenko, Vladimir
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|a Tcherniaev, Evgueni
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|t Physical Review D
|d 2022
|g Vol. 105, № 7. P. 072008-1-072008-31
|x 2470-0010
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|a RU-ToGU
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|u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002109
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|a статья
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|c 1002109
|d 1002109
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