Baryon mass splittings in the 1/{ital N}{sub {ital c}} expansion
- Department of Physics, University of California at San Diego, La Jolla, California 92093 (United States)
The {ital I}=0,1,2,3 mass splittings of the spin-1/2 octet and spin-3/2 decuplet baryons are analyzed in the 1/{ital N}{sub {ital c}} expansion combined with perturbative flavor breaking. We show there is considerable experimental evidence that the baryon masses satisfy the hierarchy predicted by this expansion. Since flavor symmetry-breaking suppression factors alone are not sufficient to describe the observed hierarchy, we conclude that there is firm evidence for the 1/{ital N}{sub {ital c}} expansion in the baryon masses. Our analysis differs from nonrelativistic SU(6).
- Research Organization:
- University of California
- DOE Contract Number:
- FG03-90ER40546
- OSTI ID:
- 69231
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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