Analysis of the radiative decays $\Sigma_Q \to \Lambda_Q \gamma$ and $\Xi^\prime_Q \to \Xi_Q \gamma$ in light cone sum rules

TL;DR

This paper employs light cone sum rules to analyze radiative decays of heavy baryons, calculating decay widths and comparing results with other theoretical approaches.

Contribution

It introduces a new sum rule for the form factor $F_2(0)$ and applies it to compute decay widths of specific heavy baryon radiative transitions.

Findings

Calculated decay widths for $ ext{Σ}_Q o ext{Λ}_Q ext{γ}$ and $ ext{Ξ'}_Q o ext{Ξ}_Q ext{γ}$.

Provided a comparison showing agreement or differences with other theoretical models.

Demonstrated the effectiveness of light cone sum rules in heavy baryon decay analysis.

Abstract

The light cone sum rules method is used in studying the radiative decays $\Sigma_Q \to \Lambda_Q \gamma$ and $\Xi^\prime_Q \to \Xi_Q \gamma$. Firstly, the sum rules for the form factor $F_2(Q^2=0)$ responsible for these transitions is constructed. Using this result the decay widths of the above--mentioned decays are calculated and analyzed. A comparison of our predictions on the decay widths of considered transitions with the predictions of the other approaches is presented.