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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorAbellan Beteta, Carlos
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorDomingo Bonal, Francesc
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2021-05-07T09:20:24Z
dc.date.accessioned2023-10-02T06:39:58Z
dc.date.available2021-05-07T09:20:24Z
dc.date.available2023-10-02T06:39:58Z
dc.date.issued2012-10
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3396
dc.description.abstractFirst evidence of the B0→J/ψω decay is found and the B0s→J/ψη and B0s→J/ψη′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experimentin proton–proton collisions at a centre-of-mass energy of√s=7 TeV. The branching fractions of these decays are measured relative to that of the B0→J/ψρ0 decay: B(B0→J/ψω)B(B0→J/ψρ0)=0.89±0.19(stat)+0.07−0.13(syst),B(B0s→J/ψη)B(B0→J/ψρ0)=14.0±1.2(stat)+1.1−1.5(syst)+1.1−1.0(fdfs),B(B0s→J/ψη′)B(B0→J/ψρ0)=12.7±1.1(stat)+0.5−1.3(syst)+1.0−0.9(fdfs),where the last uncertainty is due to the knowledge of fd/fs, the ratio of b-quark hadronization factors thataccounts for the different production rate of B0 and B0s mesons. The ratio of the branching fractions of B0s→J/ψη′ and B0s→J/ψη decays is measured to be B(B0s→J/ψη′)B(B0s→J/ψη)=0.90±0.09(stat)+0.06−0.02(syst).eng
dc.format.extent20 p.cat
dc.language.isoengcat
dc.publisherElseviercat
dc.relation.ispartofNuclear Physics B, 2012, Vol. 867, No. 3cat
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherGran col·lisionador d'hadrons (França i Suïssa)cat
dc.subject.otherCol·lisions (Física nuclear)cat
dc.subject.otherPartícules (Física nuclear)cat
dc.subject.otherProtonscat
dc.titleEvidence for the decay B0 → J/ψω and measurementof the relative branching fractions of B0s meson decays to J/ψη and J/ψη′cat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc539
dc.identifier.doihttps://doi.org/10.1016/j.nuclphysb.2012.10.021cat


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Mostra el registre parcial de l'element

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