Measurement of the branching fractions of the decays Bs0→D¯0K-π+ and B0→D¯0K+π

The first observation of the decay B 0 s → ¯¯¯ D 0 K − π + is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0     fb − 1 of p p collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay...

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Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2013-06
Main Authors: Abellan Beteta, Carlos, Camboni, Alessandro, Comerma Montells, Albert, Garrido Beltrán, Lluís, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, López Asamar, Elias, Pérez-Calero Yzquierdo, Antonio, Picatoste Olloqui, Eduardo, Potterat, Cédric, Rives Molina, Vicente José, Ruiz, Hugo (Ruiz Pérez), Vázquez Gómez, Ricard, Calvo Gómez, Míriam, Oyanguren Campos, Arantza de, Ruiz Valls, Pablo, Vilasis-Cardona, Xavier, LHCb Collaboration
Format: Article
Language:English
Subjects:
Experiments
Física de partícules
Particle physics
Online Access:Get full text
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Summary:The first observation of the decay B 0 s → ¯¯¯ D 0 K − π + is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0     fb − 1 of p p collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay B 0 → ¯¯¯ D 0 π + π − is measured to be B ( B 0 s → ¯¯¯ D 0 K − π + ) B ( B 0 → ¯¯¯ D 0 π + π − ) = 1.18 ± 0.05 ( stat ) ± 0.12 ( syst ) . In addition, the relative branching fraction of the decay B 0 → ¯¯¯ D 0 K + π − is measured to be B ( B 0 → ¯¯¯ D 0 K + π − ) B ( B 0 → ¯¯¯ D 0 π + π − ) = 0.106 ± 0.007 ( stat ) ± 0.008 ( syst ) .
ISSN:1550-7998
DOI:10.1103/PhysRevD.87.112009