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Precision measurement of the W boson decay branching fractions in proton-proton collisions at √s=13  TeV

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dc.contributor.author CMS Collaboration en_US
dc.contributor.author Tumasyan, A. en_US
dc.contributor.author ALPANA, K. en_US
dc.contributor.author DUBE, SOURABH en_US
dc.contributor.author KANSAL, B. en_US
dc.contributor.author LAHA, A. en_US
dc.contributor.author PANDEY, S. en_US
dc.contributor.author RANE, A. en_US
dc.contributor.author RASTOGI, A. en_US
dc.contributor.author SHARMA, SEEMA et al. en_US
dc.date.accessioned 2022-06-24T10:26:15Z
dc.date.available 2022-06-24T10:26:15Z
dc.date.issued 2022-04 en_US
dc.identifier.citation Physical Review D, 105(7), 072008. en_US
dc.identifier.issn 2470-0010 en_US
dc.identifier.issn 2470-0029 en_US
dc.identifier.uri https://doi.org/10.1103/PhysRevD.105.072008 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7157
dc.description.abstract The leptonic and inclusive hadronic decay branching fractions of the W boson are measured using proton-proton collision data collected at √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 ∑ij|Vij|2=1.984±0.021, the CKM element |Vcs|=0.967±0.011, and the strong coupling constant at the W boson mass scale, αS(m2W)=0.095±0.033 en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject P(P)Over-Bar Collisions en_US
dc.subject 2022-JUN-WEEK5 en_US
dc.subject TOC-JUN-2022 en_US
dc.subject 2022 en_US
dc.title Precision measurement of the W boson decay branching fractions in proton-proton collisions at √s=13  TeV en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Physical Review D en_US
dc.publication.originofpublisher Foreign en_US


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