Delta --> N gamma in Large-Nc QCD
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
The decay Delta^+ --> p gamma is studied in the 1/N_c expansion of QCD. The ratio of the helicity amplitudes is determined to be A_{3/2}/A_{1/2} = \sqrt{3} + O(1/N_c^2). Equivalently, the ratio E2/M1 of the multipole amplitudes is predicted to be order 1/N_c^2.
Cite
@article{arxiv.hep-ph/0207092,
title = {Delta --> N gamma in Large-Nc QCD},
author = {E. Jenkins and X. Ji and A. V. Manohar},
journal= {arXiv preprint arXiv:hep-ph/0207092},
year = {2008}
}
Comments
4 pages