Observation of the baryonic B decay B̅ [supersrcipt 0]→Λ[subscript c]+Λ̅ K[superscript -]
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Lees-2011-Observation of the baryonic.pdf
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
October 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Observation of the Baryonic B Decay B[over ¯]^{0}→Λ_{c}^{+}Λ[over ¯]K^{-}.” Physical Review D 84.7 (2011). © 2011 American Physical Society
Version
Final published version
Abstract
We report the observation of the baryonic B decay B̅ [superscript 0]→Λ[subscript c][superscript +]Λ̅ K[superscript -] with a significance larger than 7 standard deviations based on 471×10[superscript 6] BB̅ pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay B̅ [superscript 0]→Λ[subscript c]+Λ̅ K[superscript -] to be (3.8±0.8[subscript stat]±0.2[subscript sys]±1.0Λ[subscript c]+)×10[superscript -5]. The uncertainties are statistical, systematic, and due to the uncertainty in the Λ[subscript c][superscript +] branching fraction. We find that the Λc[superscript +]K[superscript -] invariant-mass distribution shows an enhancement above 3.5 GeV/c[superscript 2].
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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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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DOI of Published Version
https://doi.org/10.1103/PhysRevD.84.071102
