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Title: Observation of ¯¯¯B0s→J/ψf′2(1525) in J/ψK+K− Final States
Author: Abellan Beteta, Carlos
Calvo Gómez, Míriam
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, Francesc
Garrido Beltrán, Lluís
Gascón Fora, David
Grabalosa Gándara, Marc
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López Asamar, Elias
Musy, Marco
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Pie Valls, B. (Blai)
Potterat, Cédric
Puig Navarro, Albert
Roselló, M.
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, Ricard
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Particle physics
Issue Date: 9-Apr-2012
Publisher: American Physical Society
Abstract: The decay ¯¯¯ B 0 s → J / ψ K + K − is investigated using 0.16     fb − 1 of data collected with the LHCb detector using 7 TeV p p collisions. Although the J / ψ ϕ channel is well known, final states at higher K + K − masses have not previously been studied. In the K + K − mass spectrum we observe a significant signal in the f ′ 2 ( 1525 ) region as well as a nonresonant component. After subtracting the nonresonant component, we find B ( ¯¯¯ B 0 s → J / ψ f ′ 2 ( 1525 ) ) / B ( ¯¯¯ B 0 s → J / ψ ϕ ) = ( 26.4 ± 2.7 ± 2.4 ) % .
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2012, vol. 108, num. 15, p. 151801
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Física de la Matèria Condensada)

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