Analysis of negative parity baryon photoproduction helicity amplitudes in the 1/Nc expansion
Journal Article
·
OSTI ID:920020
We study the photoproduction helicity amplitudes of negative parity baryons in the context of the 1/Nc expansion of QCD. A complete analysis to next-to-leading order is carried out. The results show sub-leading effects to be within the magnitude expected from the $$1/N_c$$ power counting. They also show significant deviations from the quark model, in particular the need for 2-body effects.
- 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:
- 920020
- Report Number(s):
- JLAB-THY-07-737; DOE/OR/23177-0213; TRN: US0806570
- Country of Publication:
- United States
- Language:
- English
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