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On the fourth P_11 resonance predicted by the constituent quark model

L. Theußl·R. F. Wagenbrunn
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Abstract

We point out a distinguishing difference between constituent quark models based on one-gluon exchange and one-boson exchange dynamics. In the latter one, the P_11 nucleon resonance with predominantly symmetrical spatial wave function in the N=4 band gets strongly attracted such that it drops below some states in the N=2 band. Calculations of strong decay widths are presented in order to establish an identification with experimental states. Our results are relevant for the interpretation of the fourth P_11 resonance that was found in the partial wave analysis of the Zagreb group and recently discussed by Capstick et. al. in the framework of a model based on one-gluon exchange.

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L. Theußl, R. F. Wagenbrunn. 2001-04-06. On the fourth P_11 resonance predicted by the constituent quark model. https://doi.org/10.1103/physrevc.64.068201

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