The $g_{\Sigma_Q\Sigma_Q\pi}$ Coupling Constant via Light Cone QCD Sum Rules

TL;DR

This paper calculates the coupling constants for Sigma baryons and pions using light cone QCD sum rules, providing numerical estimates for these fundamental parameters.

Contribution

It introduces a calculation of the Sigma baryon-pion coupling constants using the most general interpolating currents within the light cone QCD sum rules framework.

Findings

g_{Σ_cΣ_cπ} = -8.0 ± 1.7

g_{Σ_bΣ_bπ} = -11.0 ± 2.1

Provides numerical estimates for coupling constants

Abstract

Using the most general form of the interpolating currents, the coupling constants $g_{\Sigma_b\Sigma_b\pi}$ and $g_{\Sigma_c\Sigma_c\pi}$ are calculated within the light cone QCD sum rules approach. It is found that $g_{{\Sigma_{c}\Sigma_{c}\pi}}=-8.0\pm1.7$ and $g_{{\Sigma_{b}\Sigma_{b}\pi}}=-11.0\pm2.1$.