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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorBadalov, Alexey
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2021-04-26T17:32:39Z
dc.date.accessioned2023-10-02T06:49:20Z
dc.date.available2021-04-26T17:32:39Z
dc.date.available2023-10-02T06:49:20Z
dc.date.created2013-07
dc.date.issued2013-09
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3495
dc.description.abstractA search for the rare decays B 0 s → μ + μ − and B 0 → μ + μ − is performed at the LHCb experiment. The data analyzed correspond to an integrated luminosity of 1     fb − 1 of p p collisions at a center-of-mass energy of 7 TeV and 2     fb − 1 at 8 TeV. An excess of B 0 s → μ + μ − signal candidates with respect to the background expectation is seen with a significance of 4.0 standard deviations. A time-integrated branching fraction of B ( B 0 s → μ + μ − ) = ( 2.9 + 1.1 − 1.0 ) × 10 − 9 is obtained and an upper limit of B ( B 0 → μ + μ − ) < 7.4 × 10 − 10 at 95% confidence level is set. These results are consistent with the standard model expectations.eng
dc.format.extent9 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysical Review Letters, 2013, Vol. 111, No. 10cat
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.otherInteraccions d'hadronscat
dc.subject.otherPartícules (Física nuclear)cat
dc.subject.otherCol·lisions (Física nuclear)cat
dc.titleMeasurement of the B 0 s → μ + μ − Branching Fraction and Search for B 0 → μ + μ − Decays at the LHCb Experimentcat
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/10.1103/PhysRevLett.111.101805cat


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/
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