Actions for A Study of Bbar to Xi_c Lambda_c^- and Bbar to Lambda_c^+ Lambda_c^- Kbar Decays at \babar [electronic resource].

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A Study of Bbar to Xi_c Lambda_c^- and Bbar to Lambda_c^+ Lambda_c^- Kbar Decays at \babar [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2007.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
8 pages : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We report measurements of B-meson decays into two- and three-body final states containing two charmed baryons using a sample of 230 million Υ(4S) → B{bar B} decays. We find significant signals in two modes, measuring branching fractions β(B⁻ → Λ{sub c}⁺Λ{sub c}⁻K⁻) = (1.14 ± 0.15 ± 0.17 ± 0.60) x 10⁻³ and β(B⁻→ Ξ°{sub c}{bar Λ}{sub c}⁻) x β(Ξ°{sub c} → Ξ⁻π⁺) = (2.08 ± 0.65 ± 0.29 ± 0.54) x 10⁻⁵, where the uncertainties are statistical, systematic, and from the branching fraction β(Λ⁺{sub c} → pK⁻π⁺), respectively. We also set upper limits at the 90% confidence level on two other modes: β({bar β}° → Ξ⁺{sub c}{bar Λ}⁻{sub c}) x β(Ξ⁺{sub c} → Ξ⁻π⁺π⁺) < 5.6 x 10⁻⁵ and β({bar B}° → Λ⁺{sub c}{bar Λ}⁻{sub c}{bar K}°) < 1.5 x 10⁻³. We observe structure centered at an invariant mass of 2.93 GeV/c² in the Λ⁺{sub c}K⁻ mass distribution of the decay B⁻ → Λ⁺{sub c}{bar Λ}⁻{sub c}K⁻.
Report Numbers
E 1.99:slac-pub-12938
slac-pub-12938
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
11/07/2007.
"slac-pub-12938"
"arXiv:0710.5775"
Physical Review D FT
Aubert, B.
Funding Information
AC02-76SF00515
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