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Study of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV

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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorMatveev, V.
dc.contributor.authorChistov, R.
dc.contributor.authorDanilov, M.
dc.contributor.authorNigamova, A.
dc.contributor.authorParygin, P.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorTarkovskii, E.
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorЧистов, Руслан Николаевич
dc.contributor.authorДанилов, Михаил Владимирович
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.date.accessioned2024-11-21T15:27:26Z
dc.date.available2024-11-21T15:27:26Z
dc.date.issued2019
dc.description.abstract© 2019, The Author(s).A study of the B +→ J / ψ Λ ¯ p decay using proton-proton collision data collected at s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching fractions B(B+→J/ψΛ¯p)/B(B+→J/ψK∗(892)+) is measured to be (1.054 ± 0.057(stat) ± 0.035(syst) ± 0.011(B))%, where the last uncertainty reflects the uncertainties in the world-average branching fractions of Λ ¯ and K*(892) + decays to reconstructed final states. The invariant mass distributions of the J / ψ Λ ¯ , J/ψp, and Λ ¯ p systems produced in the B +→ J / ψ Λ¯ p decay are investigated and found to be inconsistent with the pure phase space hypothesis. The analysis is extended by using a model-independent angular amplitude analysis, which shows that the observed invariant mass distributions are consistent with the contributions from excited kaons decaying to the Λ ¯ p system. [Figure not available: see fulltext.]
dc.identifier.citationStudy of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV / Sirunyan, A.M. [et al.] // Journal of High Energy Physics. - 2019. - 2019. - № 12. - 10.1007/JHEP12(2019)100
dc.identifier.doi10.1007/JHEP12(2019)100
dc.identifier.urihttps://www.doi.org/10.1007/JHEP12(2019)100
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85076606991&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000511707900001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/19030
dc.relation.ispartofJournal of High Energy Physics
dc.titleStudy of the B +→ J / ψ Λ ¯ p decay in proton-proton collisions at √s = 8 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.volume2019
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