P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction

Details P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction P-wave Pentaquark and its Decay in the Quark Model with Instanton Induced Interaction

2005-09-30

arxiv.org/abs/hep-ph/0510001v1

Phys.Rev.D74:054029,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 5 figures

Scientific paper

10.1103/PhysRevD.74.054029

P-wave pentaquarks with strangeness +1, I=0 and J^P=1/2^+ are studied in the non-relativistic quark model with instanton induced interaction (III). We present their mass splittings and orbital-spin-isospin-color structures. It is found that decompositions of the wave functions are sensitive to III, while the mass splittings are insensitive. The decay of the lowest energy pentaquark, \Theta^+, is found to be suppressed when the contribution of III is increased. Its wave function is dominated by Jaffe-Wilczek-type configuration at large III.

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