Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131841
Title: Observation of Bc+ → J/ψDs+ and Bc+ → J/ψDs*+ decays
Author: Abellan Beteta, Carlos
Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López Asamar, Elias
Oyanguren Campos, Arantza de
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, Pablo
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 28-Jun-2013
Publisher: American Physical Society
Abstract: The decays B + c → J / ψ D + s and B + c → J / ψ D * + s are observed for the first time using a dataset, corresponding to an integrated luminosity of 3     fb − 1 , collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of √ s = 7 and 8 TeV. The statistical significance for both signals is in excess of 9 standard deviations. The following ratios of branching fractions are measured to be B ( B + c → J / ψ D + s ) B ( B + c → J / ψ π + ) = 2.90 ± 0.57 ± 0.24 , B ( B + c → J / ψ D * + s ) B ( B + c → J / ψ D + s ) = 2.37 ± 0.56 ± 0.10 , where the first uncertainties are statistical and the second systematic. The mass of the B + c meson is measured to be m B + c = 6276.28 ± 1.44 ( stat ) ± 0.36 ( syst )     MeV / c 2 , using the B + c → J / ψ D + s decay mode.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.112012
It is part of: Physical Review D, 2013, vol. 87, num. 11, p. 112012
URI: http://hdl.handle.net/2445/131841
Related resource: https://doi.org/10.1103/PhysRevD.87.112012
ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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