Pseudoscalar--meson decuplet--baryon coupling constants in light cone QCD

Details Pseudoscalar--meson decuplet--baryon coupling constants in light cone QCD Pseudoscalar--meson decuplet--baryon coupling constants in light cone QCD

2009-08-03

arxiv.org/abs/0908.0259v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 Pages, one Figure and 3 Tables

Scientific paper

Taking into account the $SU(3)_f$ breaking effects, the strong coupling constants of the $\pi$, $K$ and $\eta$ mesons with decuplet baryons are calculated within light cone QCD sum rules method. It is shown that all coupling constants, even in the case of $SU(3)_f$ breaking, are described in terms of only one universal function. It is shown that for $\Xi^{\ast 0} \to \Xi^{\ast 0} \eta $ transition violation of $SU(3)_f$ symmetry is very large and for other channels when $SU(3)_f$ symmetry is violated, its maximum value constitutes $10%\div15%$.

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