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

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.