Measurement of the CP-violating phase ?sin the B0s?J/? ?(1020) ??+??K+K?channel in Proton-Proton Collisions at ?s=13 TeV

dc.authorid249433en_US
dc.contributor.authorBilki, Burak
dc.contributor.author.;, ve diğer
dc.date.accessioned2021-09-06T13:09:41Z
dc.date.available2021-09-06T13:09:41Z
dc.date.issued2021
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe CP-violating weak phase ?s and the decay width difference ??s between the light and heavy B0s mass eigenstates are measured with the CMS detector at the LHC in a sample of 48 500 reconstructed B0s? J/I) d (1020) ?11+11? K+K? events. The measurement is based on a data sample corresponding to an integrated luminosity of 96.4 fb?1, collected in proton-proton collisions at ?s = 13 TeV in 2017?2018. To extract the values of ?s and ??s, a time-dependent and flavor-tagged angular analysis of the 11+11?K+K? final state is performed. The analysis employs a dedicated tagging trigger and a novel opposite-side muon flavor tagger based on machine learning techniques. The measurement yields ?s = ?11 ?50 (stat) ? 10 (syst) mrad and ??s = 0.114 ? 0.014 (stat)? 0.007 (syst) ps?1, in agreement with the standard model predictions. When combined with the previous CMS measurement at ?s = 8 TeV, the following values are obtained: ?s = ?21 ? 44 (stat) ? 10 (syst) mrad, ??s = 0.1032 ? 0.0095 (stat) ? 0.0048 (syst) ps?1, a significant improvement over the 8 TeV result. ? 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY licenseen_US
dc.identifier.citationPhysıcs Letters B Volume 816 Article Number 136188en_US
dc.identifier.doi10.1016/j.physletb.2021.136188
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-85103247539en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2021.136188
dc.identifier.wosWOS:000647421500001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier [Commercial Publisher]en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectCMSen_US
dc.subjectPhysicsen_US
dc.subjectOscillationsen_US
dc.subjectB physicsen_US
dc.titleMeasurement of the CP-violating phase ?sin the B0s?J/? ?(1020) ??+??K+K?channel in Proton-Proton Collisions at ?s=13 TeVen_US
dc.typeArticleen_US

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