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dc.contributor.authorAaij, Roelen
dc.contributor.authorBeteta, Carlos Abellanen
dc.contributor.authorAckernley, T.en
dc.contributor.authorAdeva, Bernardoen
dc.contributor.authorEydelman, Semen Isaakovichen
dc.contributor.authorKharisova, Anastasiya Evgenjevnaen
dc.contributor.authorPanshin, Gennady Leonidovichen
dc.date.accessioned2024-11-05T02:43:05Z-
dc.date.available2024-11-05T02:43:05Z-
dc.date.issued2021-
dc.identifier.citationStudy of B0s→ J/ψπ+π−K+K− decays / R. Aaij, C. A. Beteta, T. Ackernley [et al.] // Journal of High Energy Physics. — 2021. — Vol. 2021, iss. 2. — [24, 33 p.].en
dc.identifier.urihttp://earchive.tpu.ru/handle/11683/80991-
dc.description.abstractThe decays B0s → J/ψπ+π−K+K− are studied using a data set corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The decays B0s → J/ψK∗0K¯¯¯¯∗0J/ψK∗0K¯∗0 and B0s → χc1(3872)K+K−, where the K+K−pair does not originate from a ϕ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate χc1(3872)ϕ, J/ψK∗0K¯¯¯¯∗0J/ψK∗0K¯∗0, ψ(2S)ϕ and χc1(3872)K+K− states are reported. A structure, denoted as X(4740), is observed in the J/ψϕ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to bemX(4740)=4741±6±6MeV/c2,ΓX(4740)=53±15±11MeV,mX(4740)=4741±6±6MeV/c2,ΓX(4740)=53±15±11MeV,where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the B0sBs0 meson is performed and gives a value ofmB0s=5366.98±0.07±0.13MeV/c2.en
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.relation.ispartofJournal of High Energy Physics. 2021. Vol. 2021, iss. 2en
dc.rightsinfo:eu-repo/semantics/openAccess-
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/-
dc.sourceJournal of High Energy Physicsen
dc.subjectB physicsen
dc.subjectBranching fractionen
dc.subjectHadron-Hadron scattering (experiments)en
dc.subjectQuarkoniumen
dc.subjectSpectroscopyen
dc.titleStudy of B0s→ J/ψπ+π−K+K− decaysen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dcterms.audienceResearchesen
local.description.firstpage24-
local.filepathreprint-nw-35882.pdf-
local.filepathhttps://doi.org/10.1007/JHEP02(2021)024-
local.identifier.bibrecRU\TPU\network\35882-
local.issue2-
local.localtypeСтатьяru
local.volume2021-
dc.identifier.doi10.1007/JHEP02(2021)024-
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