Strong coupling constant of negative parity nucleon with $\pi$ meson in light cone QCD sum rules

Abstract

We estimate strong coupling constant between the negative parity nucleons with $\pi$ meson within the light cone QCD sum rules. A method for eliminating the unwanted contributions coming from the nucleon--nucleon and nucleon--negative parity nucleon transition is presented. It is observed that the value strong coupling constant of the negative parity nucleon $N^{\ast }{N}^{\ast }\pi$ transition is considerably different from the one predicted by the 3--point QCD sum rules, but is quite close to the coupling constant of the positive parity $NN\pi$ transition.

14 pages, 4 figures, LaTeX formatted

References in corpus (3)

• Towards NNLO Accuracy in the QCD Sum Rule for the Kaon Distribution Amplitude
• Meson-octet-baryon couplings using light cone QCD sum rules
• On the strong coupling $N^{(\ast )}{N}^{(\ast )}\pi$

Cited by in corpus (4)

• Strong coupling constants and radiative decays of the heavy tensor mesons
• Analysis of the strong vertices of ${\Sigma }_c\Delta D^{\ast }$ and ${\Sigma }_b\Delta B^{\ast }$ in QCD sum rules
• Analysis of the strong vertices of ${\Sigma }_{c}N{D}^{\ast }$ and ${\Sigma }_{b}N{B}^{\ast }$ in QCD sum rules
• Analysis of the strong vertexes of ${\Sigma }_c^{\ast }ND$ and ${\Sigma }_b^{\ast }NB$ in QCD sum rules