Título:
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Observation of the baryonic B decay ¯¯¯B0→Λ+c¯¯¯ΛK−
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Autor/a:
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Garra Ticó, Jordi; Graugés Pous, Eugeni; BABAR Collaboration
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Otros autores:
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Universitat de Barcelona |
Abstract:
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We report the observation of the baryonic B decay ¯¯¯ B 0 → Λ + c ¯¯¯ Λ K − with a significance larger than 7 standard deviations based on 471 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay ¯¯¯ B 0 → Λ + c ¯¯¯ Λ K − to be ( 3.8 ± 0.8 stat ± 0.2 sys ± 1.0 Λ + c ) × 10 − 5 . The uncertainties are statistical, systematic, and due to the uncertainty in the Λ + c branching fraction. We find that the Λ + c K − invariant-mass distribution shows an enhancement above 3.5 GeV / c 2 . |
Materia(s):
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-Física de partícules -Experiments -Particle physics -Experiments |
Derechos:
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(c) American Physical Society, 2011
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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American Physical Society
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