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Title: 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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