Publication:
Measurement of the CP-violating phase ϕs in the Bs0→J/ψϕ(1020)→μ+μ−K+K− channel in proton-proton collisions at s=13TeV

Простая страница элемента
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorMatveev, V.
dc.contributor.authorBychkova, O.
dc.contributor.authorChistov, R.
dc.contributor.authorDanilov, M.
dc.contributor.authorPhilippov, D.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorЧистов, Руслан Николаевич
dc.contributor.authorДанилов, Михаил Владимирович
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.date.accessioned2024-11-29T12:39:53Z
dc.date.available2024-11-29T12:39:53Z
dc.date.issued2021
dc.description.abstract© 2021 The Author(s)The CP -violating weak phase ϕs and the decay width difference ΔΓs between the light and heavy Bs0 mass eigenstates are measured with the CMS detector at the LHC in a sample of 48500 reconstructed Bs0→J/ψϕ(1020)→μ+μ−K+K− events. The measurement is based on a data sample corresponding to an integrated luminosity of 96.4fb−1, collected in proton-proton collisions at s=13TeV in 2017–2018. To extract the values of ϕs and ΔΓs, a time-dependent and flavor-tagged angular analysis of the μ+μ−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 ϕs=−11±50(stat)±10(syst)mrad and ΔΓs=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=8TeV, the following values are obtained: ϕs=−21±44(stat)±10(syst)mrad, ΔΓs=0.1032±0.0095(stat)±0.0048(syst)ps−1, a significant improvement over the 8 TeV result.
dc.identifier.citationMeasurement of the CP-violating phase ϕs in the Bs0→J/ψϕ(1020)→μ+μ−K+K− channel in proton-proton collisions at s=13TeV / Sirunyan, A.M. [et al.] // Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 2021. - 816. - 10.1016/j.physletb.2021.136188
dc.identifier.doi10.1016/j.physletb.2021.136188
dc.identifier.urihttps://www.doi.org/10.1016/j.physletb.2021.136188
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85103247539&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000647421500001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23822
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.titleMeasurement of the CP-violating phase ϕs in the Bs0→J/ψϕ(1020)→μ+μ−K+K− channel in proton-proton collisions at s=13TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume816
relation.isAuthorOfPublicationef548252-18ef-404e-af89-6a34bcb1e902
relation.isAuthorOfPublication33fc3165-5409-4818-afca-7755baea5ae8
relation.isAuthorOfPublicationea15a545-9f37-48a7-b655-6d4f976eb636
relation.isAuthorOfPublicatione0db33f8-0f1a-4621-89aa-b2fbd84a4c94
relation.isAuthorOfPublication.latestForDiscoveryef548252-18ef-404e-af89-6a34bcb1e902
relation.isOrgUnitOfPublicationba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isOrgUnitOfPublication.latestForDiscoveryba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isProjectOfPublication3b98e09a-644d-4cc9-b64d-e187cac4328e
relation.isProjectOfPublication.latestForDiscovery3b98e09a-644d-4cc9-b64d-e187cac4328e
Файлы
Коллекции
Публикации