Search for $B^0\to p\bar{p}$, $\Lambda \bar{\Lambda }$ and $B^{+}\to p\bar{\Lambda }$ at Belle

Abstract

We report results of a search for the charmless two-body baryonic decays B^0 \to p \bar{p}, B^0 \to Λ\barΛ, and B^+\to p \barΛ based on the analysis of a 140 fb^{-1} data sample. We set 90% confidence level upper limits on their branching fractions: B(B^0 \to p \bar{p}) < 4.1 x 10^{-7}, B(B^0 \to Λ\barΛ) < 6.9 x 10^{-7}$, and B(B^+ \to p \barΛ) < 4.9 x 10^{-7}.

5 pages, 2 figures, submitted to PRD(RC)

References in corpus (4)

• Measurement of Branching Fractions and Polarization in B -> phi K^{(*)} Decays
• Neutral B Flavor Tagging for the Measurement of Mixing-induced CP Violation at Belle
• Observation of B+ -> p pbar pi+, B0 -> p pbar K0, and B+ -> p pbar K*+
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• Exclusive Baryonic B Decays Circa 2005
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• Calculation of BR(${\bar{B}}^0\to {\Lambda }_c^{+}+\bar{p})$ in the PQCD Approach
• Rates and $CP$ asymmetries of Charmless Two-body Baryonic $B_{u,d,s}$ Decays
• Production of doubly charmed baryons in B decays
• Penguin-induced Radiative Baryonic B Decays Revisited
• Status of baryonic B decays
• Phenomenological Analysis of the Decay $B^{\pm}\to K^{\pm} p {\bar p}
• Evidence for B_s^0 -> Lambda_c^+ Lambda-bar pi^-