Precision measurement of the W boson decay branching fractions in proton-proton collisions at s =13 TeV
dc.contributor.author | Yetkin, Elif Aslı | |
dc.date.accessioned | 2022-10-26T10:25:51Z | |
dc.date.available | 2022-10-26T10:25:51Z | |
dc.date.issued | 2022-04-01 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description.abstract | 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, ?S(mW2)=0.095±0.033. © 2022 CERN. | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1103/PhysRevD.105.072008 | en_US |
dc.identifier.issn | 2470-0010 | |
dc.identifier.scopus | 2-s2.0-85130262791 | en_US |
dc.identifier.uri | https://hdl.handle.net/11411/4614 | |
dc.identifier.uri | https://doi.org/10.1103/PhysRevD.105.072008 | |
dc.identifier.wos | WOS:000810464600004 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | Scopus | en_US |
dc.issue | 7 | en_US |
dc.language.iso | en | en_US |
dc.national | International | en_US |
dc.numberofauthors | 100+ | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.ispartof | Physical Review D | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | 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.volume | 105 | en_US |