Bilinear symmetry-breaking terms in the sigma model
Journal Article
·
· Phys. Rev., D; (United States)
We have studied the sigma model with additional symmetry-breaking terms which are bilinear in meson fields. The meson masses and meson decay constants are treated as functions of xi, the ratio of SU(3) octet to singlet vacuum symmetry breaking. We find that all bilinear-symmetry-breaking models except one are not smooth in xi. This nonsmoothness arises because in some cases, M/sub S/..pi.. and M/sub S/K-italic, and in one case c, the ratio of SU(3) octet to singlet explicit symmetry breaking, becomes imaginary. The model in which solutions are smooth does not predict F/sub K//F/sub ..pi../ in the experimental range.
- Research Organization:
- Physics Department, Ramjas College, Delhi University, Delhi-110007, India
- OSTI ID:
- 7222910
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 15:7; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645303* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Strong Interactions-- (-1987)
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
CHIRAL SYMMETRY
CURRENTS
ELEMENTARY PARTICLES
FUNCTIONS
HADRONS
LAGRANGIAN FUNCTION
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PSEUDOSCALAR MESONS
SIGMA MODEL
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
CHIRAL SYMMETRY
CURRENTS
ELEMENTARY PARTICLES
FUNCTIONS
HADRONS
LAGRANGIAN FUNCTION
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
PSEUDOSCALAR MESONS
SIGMA MODEL
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS