Radial excitations of mesons and nucleons from QCD sum rules

@article{Jiang2015RadialEO,
  title={Radial excitations of mesons and nucleons from QCD sum rules},
  author={Jin-feng Jiang and S. Zhu},
  journal={Physical Review D},
  year={2015},
  volume={92},
  pages={074002}
}
  • Jin-feng Jiang, S. Zhu
  • Published 2015
  • Physics
  • Physical Review D
  • Within the framework QCD sum rules, we use the least square fitting method to investigate the first radial excitations of the nucleon and light mesons such as $\rho$, $K^{*}$, $\pi$ , $\varphi$. The extracted masses of these radial excitations are consistent with the experimental data. Especially we find that the decay constant of $\pi(1300)$, which is the the first radial excitation of $\pi$, is tiny and strongly suppressed as a consequence of chiral symmetry. 

    Tables from this paper.