Measurement of the ¯¯¯B0s Effective Lifetime in the J/ψf0(980) Final State

The effective lifetime of the ¯¯¯ B 0 s meson in the decay mode ¯¯¯ B 0 s → J / ψ f 0 ( 980 ) is measured using 1.0     fb − 1 of data collected in p p collisions at √ s = 7     TeV with the LHCb detector. The result is 1.700 ± 0.040 ± 0.026     ps , where the first uncertainty is statistical and th...

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Autores: 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, 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
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/133581
Acceso en línea:https://hdl.handle.net/2445/133581
Access Level:acceso abierto
Palabra clave:Física de partícules
Experiments
Particle physics
Descripción
Sumario:The effective lifetime of the ¯¯¯ B 0 s meson in the decay mode ¯¯¯ B 0 s → J / ψ f 0 ( 980 ) is measured using 1.0     fb − 1 of data collected in p p collisions at √ s = 7     TeV with the LHCb detector. The result is 1.700 ± 0.040 ± 0.026     ps , where the first uncertainty is statistical and the second systematic. As the final state is C P -odd, and C P violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy ¯¯¯ B 0 s mass eigenstate, Γ H = 0.588 ± 0.014 ± 0.009     ps − 1 .

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