Light-Cone Sum Rules Analysis of $\Xi_{QQ^{\prime}q}\to\Sigma_{Q^{\prime}}^{*}$ Weak Decays

TL;DR

This paper uses light-cone sum rules to analyze semi-leptonic weak decays of doubly-heavy baryons into singly-heavy baryons, providing theoretical predictions for decay widths and branching ratios that can be tested experimentally.

Contribution

It introduces a novel application of light-cone sum rules to calculate transition form factors for these specific baryon decays, offering new theoretical predictions.

Findings

Calculated transition form factors analytically and numerically.

Predicted decay widths and branching ratios for the decays.

Results are compared with other theoretical approaches.

Abstract

In this work, we investigate the semi-leptonic weak decays of spin-1/2 doubly-heavy baryons $\Xi_{QQ^{\prime}}$ into spin-3/2 singly-heavy baryons $\Sigma_{Q^{\prime}}^*$ within light-cone sum rules. Using the parallel components of the light-cone distribution amplitudes of $\Sigma_{Q^{\prime}}^*$, the transition form factors for these decays are calculated both analytically and numerically. The numerical results for these semi-leptonic 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.