Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Strong Interactions and Hadron Physics
Search for the $B$-meson decay to four baryons $B \to pp \bar{p}\bar{p}$
L. Zani* on behalf of the BABAR collaboration
*corresponding author
Full text: pdf
Published on: August 02, 2019
Abstract
Final states containing baryons are kinematically accessible to weakly decaying $B$ mesons. The measurement of the 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 $B \to p p \bar{p} \bar{p}$, not yet observed, by using a data set consisting of about 470 million $B\bar{B}$ pairs collected with the BaBar detector at the SLAC National Accelerator Laboratory. We select $11.1\pm 4.6$ candidate events, corresponding to a signal significance of $2.9 \sigma$, and obtain the branching fraction of $(1.14\pm0.47_{\mathrm{(stat)}}\pm 0.17_{\mathrm{(syst)}})\times 10^{-7}$.
DOI: https://doi.org/10.22323/1.340.0148
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