The Role of the Roper in QCD

Details The Role of the Roper in QCD The Role of the Roper in QCD

2002-12-06

arxiv.org/abs/nucl-th/0212039v1

J.Phys.G31:921-934,2005

Physics

Nuclear Physics

Nuclear Theory

16 pages TeX, uses mtexsis.tex

Scientific paper

10.1088/0954-3899/31/8/021

We show that existing data suggest a simple scenario in which the nucleon, and the Delta and Roper resonances act as chiral partners in a reducible representation of the full QCD chiral symmetry group. We discuss the peculiar interpretation of this scenario using spin-flavor symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-Nc expectations.

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