Operator Analysis of L=1 Baryon Masses in Large N_c QCD

Abstract

We consider in detail the mass operator analysis for the nonstrange L=1 excited baryons in large N_c QCD. We present a straightforward procedure for constructing the large N_c baryon wavefunctions, and provide complete analytic expressions for the matrix elements of all the independent isosinglet mass operators. We discuss the relationship between the old-fashioned operator analyses based on nonrelativistic SU(6) symmetry and the modern large N_c approach, which has a firmer theoretical foundation. We then suggest a possible dynamical interpretation for the subset of operators preferred strongly by the data.

36 pages LaTeX

References in corpus (5)

• Masses of Orbitally Excited Baryons in Large N_c QCD
• $1/N_c$ Expansion for Excited Baryons
• Excited Baryons Phenomenology from Large-$N_c$ QCD
• Photoproduction of of l=1 Baryons: Quark Model versus Large N_c
• Decays of l=1 Baryons to Delta gamma

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