Chiral anomalies and quark masses
The relation between chiral-symmetry breaking and quark masses is studied in the framework of the recently proposed extended partially conserved axial-vector current hypothesis and using chiral anomalies relevant to ..pi../sup 0/ ..-->.. ..gamma gamma.. and eta ..-->.. ..gamma gamma... Equations are obtained which relate the quark masses to the chiral-symmetry-breaking parameters ..delta../sub ..pi../and ..delta../sub K/ which measure the deviations from Goldberger-Treiman relations in SU(2) x SU(2) and SU(3) x SU(3), respectively. Although, numerically, it is only possible to obtain bounds for the quark masses, these seem to be higher than what has been recently estimated in model-dependent approaches. Finally, the effect of quark confinement is briefly discussed.
- Research Organization:
- Departmento de Fisica, Centro de Investigacion y de Estudios Avanzados del I.P.N., Apartado Postal 14-740, Mexico 14, D.F.
- OSTI ID:
- 7090520
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 16:3; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BOSONS
CHIRAL SYMMETRY
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
HADRONS
LIE GROUPS
MASS FORMULAE
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PCAC THEORY
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
QUARK MODEL
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS