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arXiv · 1608.05588

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

T. M. Aliev·T. Barakat·M. Savcı
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Abstract

We estimate strong coupling constant between the negative parity nucleons with $π$ 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 $N^\ast N^\ast π$ 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 $N N π$ transition.

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T. M. Aliev, T. Barakat, M. Savcı. 2016-08-19. Strong coupling constant of negative parity nucleon with $π$ meson in light cone QCD sum rules. https://doi.org/10.1103/physrevc.95.035210

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