Abstract
We show that existing data suggest a simple scenario in which the nucleon and the Δ 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-flavour symmetries of the naive constituent quark model, as well as the consistency of the scenario with large-Nc expectations.
Original language | English (US) |
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Pages (from-to) | 921-933 |
Number of pages | 13 |
Journal | Journal of Physics G: Nuclear and Particle Physics |
Volume | 31 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1 2005 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics