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Baryon Spectrum in the Large N_c Limit

Christopher D. Carone
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Abstract

We present a model-independent analysis of the mass spectrum of nonstrange L=1 baryons in large N_c QCD. The 1/N_c expansion is used to select and order a basis of effective operators that spans the nine observables (seven masses and two mixing angles). Comparison to the data provides support for the validity of the 1/N_c expansion, but also reveals that only a few nontrivial operators are strongly preferred. We show that our results have a consistent interpretation in a constituent quark model with pseudoscalar meson exchange interactions.

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Christopher D. Carone. 2000-04-24. Baryon Spectrum in the Large N_c Limit. https://arxiv.org/abs/hep-ph/0004216

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