Explanation of the apparent charge dependence of the pion-nucleon coupling

Journal Article · Mon Nov 06 00:00:00 EST 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.2025· OSTI ID:5177468

Thomas, A W; Holinde, K ^[1]

---

1. Department of Physics and Mathematical Physics, The University of Adelaide, Post Office Box 498, Adelaide 5001, South Australia, Australia (AU)

A recent, careful analysis of the world data on {ital pp} scattering concluded that the {ital pp}{pi}{sup 0} coupling constant was 3%--4% less than expected from charge independence and the known {ital pn}{pi}{sup +} coupling constant. We propose a much simpler interpretation of the analysis of the {ital pp} data which involves no unreasonable level of charge dependence. Instead one must recognize that the pion-nucleon form factor needed in a boson-exchange model of the nucleon-nucleon force differs significantly from that relevant to a free nucleon.

• OSTI ID: 5177468
• Journal Information: Physical Review Letters; (USA), Vol. 63:19; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGE INDEPENDENCE
COUPLING CONSTANTS
DATA ANALYSIS
PROTON-PROTON INTERACTIONS
CHIRAL SYMMETRY
DISPERSION RELATIONS
FORM FACTORS
GEV RANGE 01-10
GOLDBERGER-TREIMAN RELATION
MEV RANGE 100-1000
NUCLEAR FORCES
OPE MODEL
PION-NUCLEON INTERACTIONS
PIONS
SU-3 GROUPS
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
BOSONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MEV RANGE
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties