# 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}
}
• 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.