Analysis of the vertices $\rho NN$, $\rho \Sigma \Sigma$ and $\rho \Xi \Xi$ with light-cone QCD sum rules

Abstract

In this article, we calculate the strong coupling constants of the $\rho NN$, $\rho \Sigma \Sigma$ and $\rho \Xi \Xi$ in the framework of the light-cone QCD sum rules approach. The strong coupling constants of the meson-baryon-baryon are the fundamental parameters in the one-boson exchange model which describes the baryon-baryon interactions successfully. The numerical values are in agreement with the existing calculations in part. The electric and magnetic $F/(F+D)$ ratios deviate from the prediction of the vector meson dominance theory, the SU(3) symmetry breaking effects are very large.

arXiv comment19 pages, 6 figures, revised version, add more discussions(Correct writing errors)

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• Renormalization vs Strong Form Factors for One Boson Exchange Potentials
• Analysis of the vertexes ${\Omega }_Q^{\ast }{\Omega }_Q\varphi$ and radiative decays ${\Omega }_Q^{\ast }\to {\Omega }_Q\gamma$
• Vector meson-baryon strong coupling contants in light cone QCD sum rules
• Possible open-charmed pentaquark molecule ${\Omega }_c(3188)$ --- the $D\Xi$ bound state --- in the Bethe-Salpeter formalism
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• Analysis of the new Crystal Ball data on $K^{-}p\to {\pi }^0\Lambda$ reaction with beam momenta of $514\sim 750$ MeV/$c$
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