Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/133330
Title: Measurement of the B0s→μ+μ− Branching Fraction and Search for B0→μ+μ− Decays at the LHCb Experiment
Author: Badalov, Alexey
Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Oyanguren Campos, Arantza de
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, Pablo
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 5-Sep-2013
Publisher: American Physical Society
Abstract: A 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.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.111.101805
It is part of: Physical Review Letters, 2013, vol. 111, num. 10
URI: http://hdl.handle.net/2445/133330
Related resource: https://doi.org/10.1103/PhysRevLett.111.101805
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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