Meson-octet-baryon couplings using light cone QCD sum rules

Abstract

The coupling constants of K and pi mesons with the octet baryons are studied in light cone QCD sum rules taking into account SU(3)f flavor symmetry breaking effects, but keeping the SU(2) isospin symmetry intact. It is shown that, in the SU(3)f flavor symmetry breaking case, all of the couplings can be written in terms of four universal functions instead of F and D couplings which exist in the SU(3)f symmetry case. A comparison of our results of kaon and pion-baryon couplings with existing theoretical and experimental results in the literature is performed.

Published version, small typos corrected

References in corpus (1)

• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV

Cited by in corpus (6)

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• Strong decay ${\Delta }^{++}\to p\pi$ with light-cone QCD sum rules
• Analysis of the vertices $\rho NN$, $\rho \Sigma \Sigma$ and $\rho \Xi \Xi$ with light-cone QCD sum rules
• Strong decays ${\Sigma }^{\ast }\to \Sigma \pi ,\Lambda \pi$ and related strong coupling constant