# Weak decays of doubly heavy baryons: multi-body decay channels

The European Physical Journal C, Jan 2018

The newly-discovered $$\Xi _{cc}^{++}$$ decays into the $$\Lambda _{c}^+ K^-\pi ^+\pi ^+$$, but the experimental data has indicated that this decay is not saturated by any two-body intermediate state. In this work, we analyze the multi-body weak decays of doubly heavy baryons $$\Xi _{cc}$$, $$\Omega _{cc}$$, $$\Xi _{bc}$$, $$\Omega _{bc}$$, $$\Xi _{bb}$$ and $$\Omega _{bb}$$, in particular the three-body nonleptonic decays and four-body semileptonic decays. We classify various decay modes according to the quark-level transitions and present an estimate of the typical branching fractions for a few golden decay channels. Decay amplitudes are then parametrized in terms of a few SU(3) irreducible amplitudes. With these amplitudes, we find a number of relations for decay widths, which can be examined in future.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-018-5532-7.pdf

Yu-Ji Shi, Wei Wang, Ye Xing, Ji Xu. Weak decays of doubly heavy baryons: multi-body decay channels, The European Physical Journal C, 2018, 56, DOI: 10.1140/epjc/s10052-018-5532-7