Global Analysis Of The Negative Parity Non-Strange Baryons In The 1/N{sub c} Expansion
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Hampton University, Hampton, VA (United States)
- Comision Nacional de Energia Atomica, 1429 Buenos Aires (Argentina); CONICET, Rivadavia 1917, (1033) Buenos Aires (Argentina)
- Comision Nacional de Energia Atomica, 1429 Buenos Aires (Argentina); CONICET, Rivadavia 1917, (1033) Buenos Aires (Argentina); Universidad Favaloro, Solıs 453, 1078 Buenos Aires (Argentina)
A global study of the negative parity non-strange baryon observables is performed in the framework of the 1/N{sub c} expansion. Masses, partial decay widths and photo-couplings are simultaneously analyzed. A main objective is to determine the composition of the spin 1/2 and 3/2 nucleon states, which come in pairs and involve two mixing angles which can be determined and tested for consistency by the mentioned observables. The issue of the assignment of those nucleon states to the broken SU(4) X O(3) mixed-symmetry multiplet is studied in detail, with the conclusion that the assignment made in the old studies based on the non-relativistic quark model is the preferred one. In addition, the analysis involves an update of the input data with respect to previous works.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1121111
- Report Number(s):
- JLAB-THY-13-1811; DOE/OR/23177-2804; arXiv:1311.3356; TRN: US1400246
- Journal Information:
- Physical Review D, Vol. 89, Issue 03
- Country of Publication:
- United States
- Language:
- English
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