Partial Decay Widths of Negative Parity Baryons in the 1/Nc Expansion

Abstract

The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/Nc expansion The channels considered are those with single pseudo-scalar meson emission. The analysis is carried out to sub-leading order in 1/Nc and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are obtained.

35 pages, 20 tables

References in corpus (5)

• Extended Partial-Wave Analysis of piN Scattering Data
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Disentangling the dynamical origin of P11 Nucleon Resonances
• Analysis of Negative Parity Baryon Photoproduction Amplitudes in the $1/N_c$ Expansion
• Analysis of 56-plet positive parity baryon decays in the 1/Nc expansion

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• Baryon spin-flavor structure from an analysis of lattice QCD results of the baryon spectrum