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Title: Photoproduction of positive parity baryons in the 1/Nc expansion of QCD

Abstract

We analyze the photoproduction helicity amplitudes for non-strange positive parity excited baryons in the context of the 1/N{sub c} expansion of QCD. Our results strongly suggest that, although one-body transition operators provide the dominant contributions, two-body transition operators are definitely required in order to get good fits to the presently known empirical amplitudes. The significance of this result for quark model calculations is briefly discussed.

Authors:
;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
896664
Report Number(s):
JLAB-THY-06-601; DOE/ER/40150-4171
TRN: US0700815
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLITUDES; BARYONS; HELICITY; PARITY; PHOTOPRODUCTION; QUANTUM CHROMODYNAMICS; QUARK MODEL

Citation Formats

Jose L. Goity, and Norberto N. Scoccola. Photoproduction of positive parity baryons in the 1/Nc expansion of QCD. United States: N. p., 2006. Web.
Jose L. Goity, & Norberto N. Scoccola. Photoproduction of positive parity baryons in the 1/Nc expansion of QCD. United States.
Jose L. Goity, and Norberto N. Scoccola. Thu . "Photoproduction of positive parity baryons in the 1/Nc expansion of QCD". United States. doi:. https://www.osti.gov/servlets/purl/896664.
@article{osti_896664,
title = {Photoproduction of positive parity baryons in the 1/Nc expansion of QCD},
author = {Jose L. Goity and Norberto N. Scoccola},
abstractNote = {We analyze the photoproduction helicity amplitudes for non-strange positive parity excited baryons in the context of the 1/N{sub c} expansion of QCD. Our results strongly suggest that, although one-body transition operators provide the dominant contributions, two-body transition operators are definitely required in order to get good fits to the presently known empirical amplitudes. The significance of this result for quark model calculations is briefly discussed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 21 00:00:00 EST 2006},
month = {Thu Dec 21 00:00:00 EST 2006}
}