Weak Decays of Doubly Heavy Baryons: Multi-body Decay Channels
| Autor: | Shi, Yu-Ji, Wang, Wei, Xing, Ye, Xu, Ji |
|---|---|
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Eur. Phys. J. C, 78 (2018) 56 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjc/s10052-018-5532-7 |
| Popis: | 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. Comment: 47pages, 1figure. arXiv admin note: substantial text overlap with arXiv:1707.06570 |
| Databáze: | arXiv |
| Externí odkaz: |
|