Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/133579
Title: Measurements of B+c Production and Mass with the B+c→J/ψπ+ Decay
Author: Abellan Beteta, Carlos
Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, Francesc
Garrido Beltrán, Lluís
Grabalosa Gándara, Marc
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López Asamar, Elias
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Pie Valls, B. (Blai)
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Experiments
Particle physics
Experiments
Issue Date: 5-Dec-2012
Publisher: American Physical Society
Abstract: Measurements of B + c production and mass are performed with the decay mode B + c → J / ψ π + using 0.37     fb − 1 of data collected in p p collisions at √ s = 7     TeV by the LHCb experiment. The ratio of the production cross section times branching fraction between the B + c → J / ψ π + and the B + → J / ψ K + decays is measured to be ( 0.68 ± 0.10 ( stat ) ± 0.03 ( syst ) ± 0.05 ( lifetime ) ) % for B + c and B + mesons with transverse momenta p T > 4     GeV / c and pseudorapidities 2.5 < η < 4.5 . The B + c mass is directly measured to be 6273.7 ± 1.3 ( stat ) ± 1.6 ( syst )     MeV / c 2 , and the measured mass difference with respect to the B + meson is M ( B + c ) − M ( B + ) = 994.6 ± 1.3 ( stat ) ± 0.6 ( syst )     MeV / c 2 .
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.109.232001
It is part of: Physical Review Letters, 2012, vol. 109, num. 23, p. 232001
URI: http://hdl.handle.net/2445/133579
Related resource: https://doi.org/10.1103/PhysRevLett.109.232001
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Electrònica)
Articles publicats en revistes (Física Quàntica i Astrofísica)

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