2017/12/08 by Yu-Ji Shi, Wei Wang, Ye Xing +1 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-018-5532-7
published as Eur. Phys. J. C, 78 (2018) 56 · 47pages, 1figure. arXiv admin note: substantial text overlap with arXiv:1707.06570
arxiv created 2017/12/08 · arxiv updated 2018/01/26
The newly-discovered Ξcc++ decays into the Λc+ K-π+π+, 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 Ξcc, Ωcc, Ξbc, Ωbc, Ξbb and Ωbb, 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.