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arXiv · 1803.10378

Search for the decay mode $B^0\rightarrow p p \bar{p} \bar{p}$

The BABAR Collaboration
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Abstract

A search is presented for the four-body decay $B^0\rightarrow p p \bar{p} \bar{p}$ in a sample of $471$ million $B\bar{B}$ pairs collected with the BaBar detector, operated at the SLAC PEP-II asymmetric-energy $e^+e^-$ collider. The center-of-mass energy is $10.58$ GeV. From a fit to the distribution of the energy-substituted mass $m_{\mathrm{ES}}$, the result $\mathcal{B}(B^0\rightarrow p p \bar{p} \bar{p})=(1.1 \pm 0.5 \pm 0.2) \times 10^{-7}$ is extracted, where the first uncertainty is statistical and the second is systematic. The significance of the signal is $2.9$ standard deviations. The upper limit on the branching fraction is determined to be $2.0 \times 10^{-7}$ at $90\%$ confidence level.

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The BABAR Collaboration. 2018-03-29. Search for the decay mode $B^0\rightarrow p p \bar{p} \bar{p}$. https://doi.org/10.1103/physrevd.98.071102

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