Light-cone sum rules analysis of ΞQQ,q → ΣQ,* weak decays

In this work, we investigate the semileptonic weak decays of spin-1/2 doubly heavy baryons Xi(QQ') into spin-3/2 singly heavy baryons Sigma(Q)* within light-cone sum rules. Using the parallel components of the light-cone distribution amplitudes of Sigma(Q)*, the transition form factors for these decays are calculated both analytically and numerically. The numerical results for these semileptonic weak decays widths and branching ratios are also predicted, which are compared with the same predictions by other theoretical approaches in the literatures. These phenomenology predictions can be tested by the experiments in the future.

Automated summary

In this work, the semileptonic weak decays of spin-1/2 doubly heavy baryons Xi(QQ') into spin-3/2 singly heavy baryons Sigma(Q)* are investigated using light-cone sum rules. The transition form factors for these decays are obtained analytically and numerically by considering the parallel components of the light-cone distribution amplitudes of Sigma(Q)*. The numerical results for the widths and branching ratios of these semileptonic weak decays are predicted and compared with other theoretical studies in the literature. These phenomenology predictions can be tested in future experiments.