Measurement of Baryonic B Decays

TL;DR

This paper reports new measurements of baryonic B decays using Belle data, including first observations of several decay modes, advancing understanding of baryon production in B meson decays.

Contribution

It presents the first observations of multiple baryonic B decay modes, expanding the experimental knowledge in this area.

Findings

First observation of B^0 → pΛ̄_c decay

First hyperonic decay B^0 → pΛ̄π^-

First observations of B^+ → p p̄ π^+ and other modes

Abstract

Recent results of baryonic B decays from Belle are reported. This study is done by a 78 fb$^{-1}$ data sample, consisting of $85.0 \pm 0.5$ million $B\bar{B}$ pairs, collected by the Belle detector at the KEKB asymmetric energy $e^+e^-$ (3.5 on 8 GeV) collider. The results reported here include the first observation of the two-body decay $B^0 \to p\bar\Lambda_c$, the first hyperonic decay $B^0 \to p\bar{\Lambda}\pi^-$, and first observations of $B^+ \to p\bar{p}\pi^+$, $B^0 \to p\bar{p}K_S^0$, and $B^+ \to p\bar{p}K^{\star +}$.