Mostra el registre parcial de l'element

dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2020-06-19T17:33:58Z
dc.date.accessioned2023-10-02T06:32:45Z
dc.date.available2020-06-19T17:33:58Z
dc.date.available2023-10-02T06:32:45Z
dc.date.created2013
dc.date.issued2013-09-10
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3298
dc.description.abstractA broad peaking structure is observed in the dimuon spectrum of B+→K+μ+μ− decays in the kinematic region where the kaon has a low recoil against the dimuon system. The structure is consistent with interference between the B+→K+μ+μ− decay and a resonance and has a statistical significance exceeding six standard deviations. The mean and width of the resonance are measured to be 4191+9−8  MeV/c2 and 65+22−16  MeV/c2, respectively, where the uncertainties include statistical and systematic contributions. These measurements are compatible with the properties of the ψ(4160) meson. First observations of both the decay B+→ψ(4160)K+ and the subsequent decay ψ(4160)→μ+μ− are reported. The resonant decay and the interference contribution make up 20% of the yield for dimuon masses above 3770  MeV/c2. This contribution is larger than theoretical estimates.eng
dc.format.extent8 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysical Review Letters, 2013, Vol. 111, No. 11 (Setembre)cat
dc.rightsAttribution 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherGran col·lisionador d'hadrons (França i Suïssa)cat
dc.subject.otherPartícules (Física nuclear)cat
dc.subject.otherMesonscat
dc.titleObservation of a Resonance in B+→K+μ+μ− Decays at Low Recoilcat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc53
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.111.112003cat


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Mostra el registre parcial de l'element

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