Charge-symmetry-breaking potentials from isospin-violating meson-baryon coupling constants

Journal Article · Mon Sep 25 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.2462· OSTI ID:240386

Gardner, S; Horowitz, C J ^[1]; Piekarewicz, J ^[2]

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1. Nuclear Theory Center and Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
2. Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306 (United States)

We consider charge-symmetry violations in the nucleon-nucleon force that result from isospin-violating meson-baryon coupling constants. The isospin violations arise from the difference in the up and down constituent quark masses. We show that a class IV charge-symmetry-breaking potential exists in the resulting {omega} exchange contribution to the {ital NN} force. The magnitude of this contribution is consistent with that phenomenologically required by the measured difference of {ital n} and {ital p} analyzing powers in elastic {ital {rvec n}}{minus}{ital {rvec p}} scattering at 183 MeV.

• Research Organization: Indiana University
• DOE Contract Number: FG02-87ER40365; FG05-85ER25000; FG05-92ER40750
• OSTI ID: 240386
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
C INVARIANCE
COUPLING CONSTANTS
ELASTIC SCATTERING
ISOSPIN
MASS
MESON-BARYON INTERACTIONS
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
POLARIZATION-ASYMMETRY RATIO
POTENTIALS
PROTON-NEUTRON INTERACTIONS
QUARKS
SYMMETRY BREAKING
VIOLATIONS