Strong $\Sigma_bNB$ and $\Sigma_cND$ coupling constants in QCD

TL;DR

This paper calculates the strong coupling constants among heavy baryons, nucleons, and mesons using QCD sum rules, providing key parameters for understanding their interactions.

Contribution

It introduces a QCD sum rule approach to compute strong coupling form factors for heavy baryon-nucleon-meson vertices.

Findings

Calculated strong coupling constants for $oldsymbol{\Sigma_b N B}$ and $oldsymbol{\Sigma_c N D}$ vertices.

Provided numerical values for the strong coupling form factors.

Enhanced understanding of heavy baryon interactions in QCD.

Abstract

We study the strong interactions among the heavy bottom spin--1/2 $\Sigma_b$ baryon, nucleon and $B$ meson as well as the heavy charmed spin--1/2 $\Sigma_c$ baryon, nucleon and $D$ meson in the context of QCD sum rules. We calculate the corresponding strong coupling form factors defining these vertices by using a three point correlation function. We obtain the numerical values of the corresponding strong coupling constants via the most prominent structure entering the calculations.