Photo-production of Positive Parity Excited Baryons in the 1/Nc Expansion of QCD

Abstract

We analyze the photo-production helicity amplitudes for the positive parity excited baryons in the context of the $1/N_c$ expansion of QCD. The results show that sub-leading corrections in $1/N_c$ are important and that, while 1-body effective operators are dominant, there is some evidence for the need of 2-body effects.

10 pages

References in corpus (2)

• Masses of $[70,{\ell }^{+}]$ Baryons in the $1/N_c$ Expansion
• Study of nucleon resonances with electromagnetic interactions

Cited by in corpus (8)

• Regge approach to charged-pion photoproduction at invariant energies above 2 GeV
• Baryon resonances in large $N_c$ QCD
• Analysis of Negative Parity Baryon Photoproduction Amplitudes in the $1/N_c$ Expansion
• Baryon Regge Trajectories in the Light of the $1/N_c$ Expansion
• Electromagnetic multipole moments of baryons
• Analysis of 56-plet positive parity baryon decays in the 1/Nc expansion
• Pion Electroproduction Amplitude Relations in the 1/N_c Expansion
• Target normal single-spin asymmetry in inclusive electron-nucleon scattering in the 1/Nc expansion