Radial excitations of mesons and nucleons from QCD sum rules

Abstract

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 $\rho$, $K^{\ast }$, $\pi$ , $\phi$. 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.

19 pages

References in corpus (2)

• The decay constant of the first excited pion from lattice QCD
• Radial excitations of heavy-light mesons from QCD sum rules

Cited by in corpus (6)

• The pion: an enigma within the Standard Model
• Distribution amplitudes of radially-excited pi- and K-mesons
• The mass and residues of radially and orbitally excited doubly heavy baryons in QCD
• Radial Excitations of the Decuplet Baryons
• Decay properties of the $Z_c(3900)$ through the Fierz rearrangement
• Electromagnetic couplings of radially excited light vector mesons from QCD sum rules