English

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

High Energy Physics - Phenomenology 2017-04-05 v1

Abstract

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

Keywords

Cite

@article{arxiv.1608.05588,
  title  = {Strong coupling constant of negative parity nucleon with $\pi$ meson in light cone QCD sum rules},
  author = {T. M. Aliev and T. Barakat and M. Savcı},
  journal= {arXiv preprint arXiv:1608.05588},
  year   = {2017}
}

Comments

14 pages, 4 figures, LaTeX formatted