Phenomenological aspects of isospin violation in the nuclear force
Abstract
Phenomenological Lagrangians and dimensional power counting are used to assess isospin violation in the nucleon-nucleon force. The πNN coupling constants (including the Goldberger-Treiman discrepancy), charge-symmetry breaking, and meson-mixing models are examined. A one-loop analysis of the isospin-violating πNN coupling constants is performed using chiral perturbation theory. Meson-mixing models and the 3He 3H mass difference are also discussed in the context of naturalness.
- Publication:
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Physics Letters B
- Pub Date:
- February 1996
- DOI:
- 10.1016/0370-2693(96)00009-3
- arXiv:
- arXiv:nucl-th/9601009
- Bibcode:
- 1996PhLB..371..169V
- Keywords:
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- Nuclear Theory;
- High Energy Physics - Phenomenology
- E-Print:
- 10 pages, latex, 1 figure -- To appear in Physics Letters B -- epsfig.sty required