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dc.contributor.authorAbellan Beteta, Carlos-
dc.contributor.authorCalvo Gómez, Míriam-
dc.contributor.authorCamboni, Alessandro-
dc.contributor.authorComerma Montells, Albert-
dc.contributor.authorDomingo Bonal, Francesc-
dc.contributor.authorGarrido Beltrán, Lluís-
dc.contributor.authorGascón Fora, David-
dc.contributor.authorGrabalosa Gándara, Marc-
dc.contributor.authorGraciani Díaz, Ricardo-
dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorLópez Asamar, Elias-
dc.contributor.authorPérez-Calero Yzquierdo, Antonio-
dc.contributor.authorPicatoste Olloqui, Eduardo-
dc.contributor.authorPie Valls, B. (Blai)-
dc.contributor.authorPotterat, Cédric-
dc.contributor.authorPuig Navarro, Albert-
dc.contributor.authorRoselló, M.-
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)-
dc.contributor.authorVázquez Gómez, Ricard-
dc.contributor.authorVilasis-Cardona, Xavier-
dc.contributor.authorLHCb Collaboration-
dc.description.abstractA search for B 0 s → μ + μ − and B 0 → μ + μ − decays is performed using 1.0     fb − 1 of p p collision data collected at √ s = 7     TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B ( B 0 s → μ + μ − ) < 4.5 ( 3.8 ) × 10 − 9 and B ( B 0 → μ + μ − ) < 1.0 ( 0.81 ) × 10 − 9 at 95% (90%) confidence level.-
dc.format.extent8 p.-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofPhysical Review Letters, 2012, vol. 108, num. 23, p. 231801-
dc.rightscc by (c) CERN; LHCb Collaboration, 2012-
dc.subject.classificationFísica de partícules-
dc.subject.otherParticle physics-
dc.titleStrong Constraints on the Rare Decays B0s→μ+μ− and B0→μ+μ−-
Appears in Collections:Articles publicats en revistes (Electrònica)
Articles publicats en revistes (Física Quàntica i Astrofísica)

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