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 |