Weak Decays of Doubly Heavy Baryons: W-Exchange

Abstract

Since the LHCb collaboration announced the observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$, a series of studies of doubly heavy baryons have been presented. In this work, I analyse the non-leptonic weak decays of doubly heavy baryons ${\Xi }_{bc}$ and ${\Omega }_{bc}$ under the flavor $SU(3)$ symmetry. I mainly focus on the $W$-exchange diagrams, which will contribute to the decay channels with final states are light meson and light baryon. These channels would be helpful for searching for ${\Xi }_{bc}$ and ${\Omega }_{bc}$ at LHC. And these channels and relations of corresponding decay widths could be examined by the future experimental facilities such as LHC, Belle II and CEPC.

arXiv comment9 pages, 1 figure

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