Large N{sub c} expansion and the parity-violating {pi}, N, {delta} couplings
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
In the limit of large N{sub c} we first consider the N{sub c} ordering of the various parity-violating {pi}, N, {delta} couplings. Then we derive the relations among these couplings and consistency relations from the stability of these couplings under the chiral loop corrections with and without the mass splitting between N and {delta}. Especially we find that h{sub {delta}}=-(3/{radical}(5))h{sub {pi}} in the large N{sub c} limit, which correctly reproduces the relative sign and magnitude of the Desplanques-Donoghue-Holstein values for these parity-violating couplings.
- OSTI ID:
- 21300898
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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