Quark mass differences and isospin violation in the pion-nucleon coupling constants
Journal Article
·
· Phys. Rev. C; (United States)
We investigate the pseudoscalar pion-nucleon constants in the framework of various chiral models of the nucleon. We demonstrate that strong isospin violation (m/sub u/not =m/sub d/) does not lead to a charge dependence of the pion-nucleon vertex as recently reported on the basis of NN scattering data. Using the equivalence theorem, we show that the pion mass difference leads to a 3% effect in the pseudovector ..pi..N coupling constants.
- Research Organization:
- Centre de Recherches Nucleaires and Universite Louis Pasteur de Strasbourg, Groupe de Physique Nucleaire Theorique, F-67037 Strasbourg CEDEX, France
- OSTI ID:
- 6032415
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 39:5; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CHIRAL SYMMETRY
COUPLING
COUPLING CONSTANTS
ELEMENTARY PARTICLES
EQUIVALENCE PRINCIPLE
FUNCTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
ISOSPIN
LAGRANGIAN FUNCTION
MASS DIFFERENCE
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION-NUCLEON INTERACTIONS
POSTULATED PARTICLES
PROPAGATOR
PSEUDOSCALAR MESONS
PSEUDOVECTOR COUPLING
QUARKS
RENORMALIZATION
SCATTERING
SYMMETRY
SYMMETRY BREAKING
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CHIRAL SYMMETRY
COUPLING
COUPLING CONSTANTS
ELEMENTARY PARTICLES
EQUIVALENCE PRINCIPLE
FUNCTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
ISOSPIN
LAGRANGIAN FUNCTION
MASS DIFFERENCE
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION-NUCLEON INTERACTIONS
POSTULATED PARTICLES
PROPAGATOR
PSEUDOSCALAR MESONS
PSEUDOVECTOR COUPLING
QUARKS
RENORMALIZATION
SCATTERING
SYMMETRY
SYMMETRY BREAKING