Measurement of the CP-violating phase ?sin the B0s?J/? ?(1020) ??+??K+K?channel in Proton-Proton Collisions at ?s=13 TeV
| dc.authorid | 249433 | en_US |
| dc.contributor.author | Bilki, Burak | |
| dc.contributor.author | .;, ve diğer | |
| dc.date.accessioned | 2021-09-06T13:09:41Z | |
| dc.date.available | 2021-09-06T13:09:41Z | |
| dc.date.issued | 2021 | |
| dc.department | İstanbul Beykent Üniversitesi | en_US |
| dc.description.abstract | The 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 license | en_US |
| dc.identifier.citation | Physıcs Letters B Volume 816 Article Number 136188 | en_US |
| dc.identifier.doi | 10.1016/j.physletb.2021.136188 | |
| dc.identifier.issn | 0370-2693 | |
| dc.identifier.scopus | 2-s2.0-85103247539 | en_US |
| dc.identifier.scopusquality | Q1 | en_US |
| dc.identifier.uri | https://doi.org/10.1016/j.physletb.2021.136188 | |
| dc.identifier.wos | WOS:000647421500001 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier [Commercial Publisher] | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.subject | CMS | en_US |
| dc.subject | Physics | en_US |
| dc.subject | Oscillations | en_US |
| dc.subject | B physics | en_US |
| dc.title | Measurement of the CP-violating phase ?sin the B0s?J/? ?(1020) ??+??K+K?channel in Proton-Proton Collisions at ?s=13 TeV | en_US |
| dc.type | Article | en_US |
