Authors: N. Supanam, K. Khosonthongkee, Y. Yan
Title: Decay of Roper resonance in hybrid baryon model.
Keywords: Roper resonance, Hybrid baryon
Abstract:
In this work we study the structure of the Roper resonance via its decay processes. We go along with the argument that the Roper resonance is a state of three quarks and one transverse-electric (TE) gluon. A nonrelativistic quark-gluon model is employed, where the dynamics of antiquark-quark-gluon is described in the effective 3S1 vertex in which a quark-antiquark pair is created (destroyed) from (into) a gluon. The wave function of the Roper resonance is properly constructed to take account into the gluon freedom in the nonrelativistic regime. The branching decay widths of Roper resonance to the N-pi, N-rho, N-eta, N-pi-pi and Delta-pi channels will be shown.
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