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Observation of the baryonic B-decay B-bar--> Lambda c+p-barK- pi +

Author(s)
Dujmic, Denis; Henderson, Shawn Wesley; Sciolla, Gabriella; Yamamoto, R. K.; Zhao, M.; Fisher, Peter H; Cowan, Ray F; Spitznagel, Michael A; ... Show more Show less
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Alternative title
Observation of the baryonic B-decay B̅ 0→Λc+p̅ K-π+
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
We report the observation of the baryonic B-decay B̅ 0-->Lambda c+p̅ K-pi+, excluding contributions from the decay B̅ 0-->Lambda c+Lambda K-. Using a data sample of 467×106 BB̅ 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+)×10-5. In addition we find evidence for the resonant decay B̅ 0-->Sigma c(2455)++p̅ K- and determine its branching fraction to be (1.11±0.30stat±0.09syst±0.29Λc+)×10-5. The errors are statistical, systematic, and due to the uncertainty in the Λc+ branching fraction. For the resonant decay B̅ 0-->Lambda c+p̅ K̅ *0 we obtain an upper limit of 2.42×10-5 at 90% confidence level.
Date issued
2009-09
URI
http://hdl.handle.net/1721.1/57483
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Observation of the baryonic B-decay B-bar--> Lambda c+p-barK- pi +.” Physical Review D 80.5 (2009): 051105. © 2009 The American Physical Society.
Version: Final published version
ISSN
1550-7998

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