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

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Cited by in corpus (26)

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• Strong coupling constants of light pseudoscalar mesons with heavy baryons in QCD
• Analysis of the vertexes ${\Omega }_Q^{\ast }{\Omega }_Q\varphi$ and radiative decays ${\Omega }_Q^{\ast }\to {\Omega }_Q\gamma$
• Final-state rescattering mechanism of charmed baryon decays
• Vector meson-baryon strong coupling contants in light cone QCD sum rules
• ${\Sigma }_Q{\Lambda }_Q\pi$ Coupling Constant in Light Cone QCD Sum Rules
• Spin--3/2 to spin--1/2 heavy baryons and pseudoscalar mesons transitions in QCD
• Heavy baryon--light vector meson couplings in QCD
• Weak Decays of Doubly Heavy Baryons: ${\mathcal{B}}_{cc}\to \mathcal{B}{D}^{(\ast )}$
• Nucleon form factors induced by isovector and isoscalar axial-vector currents in QCD
• 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 transitions of decuplet to octet baryons and pseudoscalar mesons
• Pseudoscalar--meson decuplet--baryon coupling constants in light cone QCD
• Analysis of heavy spin--3/2 baryon--heavy spin--1/2 baryon--light vector meson vertices in QCD
• Strong coupling constants of heavy spin--3/2 baryons with light pseudoscalar mesons
• Light vector meson octet-decuplet baryon vertices in QCD
• Strong decays ${\Sigma }^{\ast }\to \Sigma \pi ,\Lambda \pi$ and related strong coupling constant
• Final-state rescattering mechanism in bottom-baryon decays
• Eta-nucleon coupling constant in QCD with SU(3) symmetry breaking
• Strong Coupling Constants of Decuplet Baryons with Vector Mesons
• Strong coupling constant of negative parity nucleon with $\pi$ meson in light cone QCD sum rules
• The $g_{{\Sigma }_Q{\Sigma }_Q\pi }$ Coupling Constant via Light Cone QCD Sum Rules
• Strong coupling constant of negative parity octet baryons with light pseudoscalar mesons in light cone QCD sum rules