Search for exclusive rare baryonic decays ofBmesons

10 May 1999

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 59 (11) , 111101
https://doi.org/10.1103/physrevd.59.111101

Abstract

We report the results of a search for the rare baryonic decay modes

B^{0} \to Λ \bar{Λ},

B^{+} \to \bar{Λ} p,

B^{0} \to \bar{Λ} p π^{-},

and

B^{0} \to p \bar{p}

(and their charge conjugate states) using

5.8 \times 10^{6} B \bar{B}

pairs collected with the CLEO detector. We see no statistically significant signals in any of these modes and set 90% confidence level upper limits on their branching fractions,

B {(B}^{0} \to Λ \bar{Λ}) < 3.9 \times 10^{- 6},

B {(B}^{+} \to \bar{Λ} p) < 2.6 \times 10^{- 6},

B {(B}^{0} \to \bar{Λ} p π^{-}) < 1.3 \times 10^{- 5},

and

B {(B}^{0} \to p \bar{p}) < 7.0 \times 10^{- 6} .

Keywords

ELEMENTARY PARTICLES

All Related Versions

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