Search for Exclusive Rare Baryonic Decays of $B$ Mesons

Abstract

We report the results of a search for the rare baryonic decay modes B -> Lambda Lambdabar, B -> Lambdabar p, B -> Lambdabar p pi, and B -> p pbar using 5.8M BBbar 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 -> Lambda Lambdabar) < 3.9 \times 10^{-6}, B(B -> Lambdabar p) < 2.6 \times 10^{-6}, B(B -> Lambdabar p pi) < 1.3 \times 10^{-5}, and B(B -> p pbar) < 7.0 \times 10^{-6}.

arXiv comment10 pages, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

References in corpus (3)

• Search for Exclusive Charmless Hadronic B Decays
• Two-Body B Meson Decays to $\eta$ and ${\eta }^{{}^{\prime }}$ -- Observation of $B\to \eta${'}K$
• Observation of Exclusive Two-Body B Decays to Kaons and Pions

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• Search for Charmless Two-body Baryonic Decays of B Mesons
• Exclusive Baryonic B Decays Circa 2005
• Prediction of Three-body $B^0\to {\rho }^{-}p\bar{n},{\pi }^{-}p\bar{n}$ Decay Rates
• Three-Body Charmful Baryonic B Decays $\bar{B}\to D(D^{\ast })N\bar{N}$
• First evidence for the two-body charmless baryonic decay $B^0\to p\bar{p}$
• Calculation of BR(${\bar{B}}^0\to {\Lambda }_c^{+}+\bar{p})$ in the PQCD Approach
• Study of the charmed baryonic decays ${\bar{B}}^0\to {\Sigma }_c^{++}\bar{p}{\pi }^{-}$ and ${\bar{B}}^0\to {\Sigma }_c^0\bar{p}{\pi }^{+}$
• First observation of the rare purely baryonic decay $B^0\to p\bar{p}$
• Status of baryonic B decays
• A note on the baryonic B-->Lambdabar p eta' decay
• Observation of the rare baryonic decay $B^{+}\to p\bar{\Lambda }$ and measurement of its weak decay parameter