${\Sigma_{Q}\Lambda_{Q}\pi}$ Coupling Constant in Light Cone QCD Sum Rules

TL;DR

This paper calculates the strong coupling constants for $\Sigma_{Q} ightarrow\Lambda_{Q}\pi$ decays using light cone QCD sum rules, providing theoretical estimates that are compared with experimental data.

Contribution

It introduces a calculation of the $\Sigma_{Q} ightarrow\Lambda_{Q}\pi$ coupling constants using the most general baryonic currents in light cone QCD sum rules, offering new theoretical predictions.

Findings

Predicted coupling constants for charm and bottom baryons.

Estimated decay widths for $\Sigma_{Q} ightarrow\Lambda_{Q}\pi$ decays.

Comparison with experimental data and other theoretical approaches.

Abstract

The strong coupling constants $g_{{\Sigma_{Q}\Lambda_{Q}\pi}}$ ($Q=b$ and $c$) are studied in the framework of the light cone QCD sum rules using the most general form of the baryonic currents. The predicted coupling constants are used to estimate the decay widths for the $\Sigma_{Q}\longrightarrow\Lambda_{Q}\pi$ decays which are compared with the predictions of the other approaches and existing experimental data.