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Observation of the baryonic B-decay B¯0Λc+p¯Kπ+

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 80, 051105(R) – Published 17 September 2009

Abstract

We report the observation of the baryonic B-decay B¯0Λc+p¯Kπ+, excluding contributions from the decay B¯0Λc+Λ¯K. Using a data sample of 467×106 BB¯ pairs collected with the BABAR detector at the PEP-II storage ring at SLAC, the measured branching fraction is (4.33±0.82stat±0.33syst±1.13Λc+)×105. In addition we find evidence for the resonant decay B¯0Σc(2455)++p¯K and determine its branching fraction to be (1.11±0.30stat±0.09syst±0.29Λc+)×105. The errors are statistical, systematic, and due to the uncertainty in the Λc+ branching fraction. For the resonant decay B¯0Λc+p¯K¯*0 we obtain an upper limit of 2.42×105 at 90% confidence level.

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  • Received 28 July 2009

DOI:https://doi.org/10.1103/PhysRevD.80.051105

©2009 American Physical Society

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Vol. 80, Iss. 5 — 1 September 2009

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