Prog. Theor. Phys. Vol. 38 No. 6 (1967) pp. 1347-1360
A Model of the Nucleon and the P11 Resonance as a Bound State of a Hidden Channel
Department of Physics, Kyushu University, Fukuoka
(Received June 16, 1967)
A simple model is proposed for the nucleon and the P11 resonance, which explains the main features in the P11 state of the πN channel. It is indicated that the large inelasticity of the P11 state is not the origin of the resonance but the result of it. It is assumed in this model that there is a hidden channel involving a strongly bound state and its coupling to the πN channel generates the two particle states. The nucleon appears as if it were an elementary particle. provided only the πN channel is considered. Analyses are based on a decomposition of a partial wave amplitude into two parts, one representing a particle part and the other a background part. As to this point it is shown that an argument by Michael on the S11 state is not necessarily correct.
DOI : 10.1143/PTP.38.1347
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Citing Article(s) :
Progress of Theoretical Physics Vol. 40 No. 5 (1968) pp. 1060-1067
Multi-Resonance Structure in the P11 State of πN Scattering
Progress of Theoretical Physics Vol. 41 No. 4 (1969) pp. 1046-1056
Dynamical Implication of the πN P11 Data
Progress of Theoretical Physics Vol. 42 No. 3 (1969) pp. 629-640
Inelastic Resonances with the Repulsive Background
Progress of Theoretical Physics Vol. 78 No. 2 (1987) pp. 370-386
Variational Approach to πN Scattering in a Chiral Quark-Pion Model
Koetsu Fujiwara and Masayuki Uehara