PoS - Proceedings of Science
Volume 314 - The European Physical Society Conference on High Energy Physics (EPS-HEP2017) - Flavour Physics and Fundamental Symmetries (Poster Session). Scientific Secretary: Luciano Canton.
Search for the $B$-meson decay to four baryons $B \to p \bar{p} p \bar{p}$ at BaBar
L. Zani*  on behalf of the BABAR collaboration
Full text: pdf
Pre-published on: January 29, 2018
Published on: March 20, 2018
Abstract
$B$ mesons are the lightest mesons which can decay to various final states containing baryons. The measurement and comparison of exclusive branching fractions of baryonic $B$ decays, as well as studies on the dynamic of the decay, may allow better understanding of baryon production in $B$ decays and, more generally, hadron fragmentation into baryons. We present here a search for the decay of a $B$ meson in four baryons, $B^0\rightarrow p p \bar{p} \bar{p}$. From the observation of $(10.4 \pm 4.3)$ signal events, we provide the upper limit $\mathcal{B}(B^0\rightarrow p p \bar{p} \bar{p}) <2 \times 10^{-7}$ at $90\%$ CL. The data set consists of about $470$ million $B\bar{B}$ pairs collected with the BaBar detector at the SLAC National Accelerator Laboratory.
DOI: https://doi.org/10.22323/1.314.0676
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