LARGE-N(C) QCD AND 1 N(C) CORRECTIONS TO BARYON OBSERVABLES/

Authors
Citation
M. Wakamatsu, LARGE-N(C) QCD AND 1 N(C) CORRECTIONS TO BARYON OBSERVABLES/, Physics letters. Section B, 331(3-4), 1994, pp. 425-429
Citations number
16
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
331
Issue
3-4
Year of publication
1994
Pages
425 - 429
Database
ISI
SICI code
0370-2693(1994)331:3-4<425:LQA1NC>2.0.ZU;2-I
Abstract
Recently, Dashen and Manohar have derived a set of consistency conditi ons that must be satisfied by large-N(c) QCD, which enables them to gi ve quite a general proof to that some of the large-N(c) spin-flavor sy mmetry relations for baryon observables are violated only at order 1/N (c)2. We try to clarify not only the power but also the limitation of their model-independent approach through a comparative analysis of 1/N (c) corrections to baryon observables in three simple effective models of QCD. We then advocate a viewpoint that the N(c) --> infinity limit and the 1/N(c) expansion framework should be clearly distinguished, b ecause the former has little to do with our real world.