Instantons and the singlet coupling in the chiral quark model - art. no. 097503.

Authors
Cheng, TP Li, LF
Citation
Tp. Cheng et Lf. Li, Instantons and the singlet coupling in the chiral quark model - art. no. 097503., PHYS REV D, 5909(9), 1999, pp. 7503
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
5909
Issue
9
Year of publication
1999
Database
ISI
SICI code
0556-2821(19990501)5909:9<7503:IATSCI>2.0.ZU;2-H
Abstract
The chiral quark model with a broken U(3) flavor symmetry can be interprete d as the effective theory of instanton-dominated nonperturbative QCD. This naturally suggests the possibility of a negative singlet to octet coupling ratio, which has been found, in a previous publication, to be compatible wi th the phenomenological description of the nucleon spin-flavor structure. [ S0556-2821(99)06909-X].