Selected problems of baryons spectroscopy: chiral soliton versus quark models
Abstract
Inconsistency between rigid rotator and bound state models at arbitrary number of colors, rigid rotator -- soft rotator dilemma and some other problems of baryon spectroscopy are discussed in the framework of the chiral soliton approach (CSA). Consequences of the comparison of CSA results with simple quark models are considered and the expansion for the effective strange antiquark mass is presented, as it follows from the CSA. Strong dependence of the effective strange antiquark mass on the SU(3) multiplet is required to fit the CSA predictions. The difference of `good' and `bad' diquark masses, which is about 100 Mev, is in reasonable agreement with other estimates. Multibaryons (hypernuclei) with strangeness are described and some states of interest are predicted within CSA as well.
Keywords
Cite
@article{arxiv.0812.4878,
title = {Selected problems of baryons spectroscopy: chiral soliton versus quark models},
author = {Vladimir B. Kopeliovich},
journal= {arXiv preprint arXiv:0812.4878},
year = {2011}
}
Comments
18 pages, 6 figures. Based partly on the talks at the Workshop NP08, Mito, Japan, March 05-07, 2008;15th International Seminar Quarks-2008, Sergiev Posad, Russia, May 23-29 and at the International Workshop HSQCD'2008, Gatchina, Russia, June 30 - July 4, 2008