Constituent Quark Couplings and QCD in the Large $N_c$ Limit
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
It is shown that in the constituent quark model of Georgi-Manohar, the dispersion relation that leads to the Adler-Weisberger sum rule for the axial vector coupling requires a subtraction constant. This fact explains the discrepancy between the results of different recent estimates of the corrections to Weinberg's large result , where is the number of QCD colors. We also discuss a possible scenario which shows that might not be a necessary consequence of QCD in the large limit.
Keywords
Cite
@article{arxiv.hep-ph/9304262,
title = {Constituent Quark Couplings and QCD in the Large $N_c$ Limit},
author = {Santiago Peris and Eduardo de Rafael},
journal= {arXiv preprint arXiv:hep-ph/9304262},
year = {2008}
}
Comments
9 pages, 4 figs. not included available upon request to PERIS @ IFAE.ES, plain TeX, preprint No. UAB-FT-310 and CPT-93/P.2883