Strong transitions of decuplet to octet baryons and pseudoscalar mesons

TL;DR

This paper investigates the strong coupling constants between light pseudoscalar mesons and baryons using light cone QCD sum rules, revealing a universal function description despite SU(3) symmetry breaking.

Contribution

It introduces a method to describe all relevant coupling constants with a single universal function, accounting for SU(3) symmetry breaking effects.

Findings

All coupling constants are described by one universal function.

SU(3)_f symmetry breaking effects are incorporated into the analysis.

The approach simplifies understanding of meson-baryon interactions.

Abstract

The strong coupling constants of light pseudoscalar $\pi$, $K$ and $\eta$ mesons with decuplet--octet baryons are studied within light cone QCD sum rules, where $SU(3)_f$ symmetry breaking effects are taken into account. It is obtained that all coupling constants under the consideration are described by only one universal function even if $SU(3)_f$ symmetry breaking effects are switched into the game.