P-wave pentaquark and its decay in the quark model with instanton induced interaction

2005/09/30 by Tetsuya Shinozaki, Makoto Oka, S. Takeuchi +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.74.054029

published as Phys.Rev.D74:054029,2006 · 9 pages, 5 figures

arxiv created 2005/09/30 · openalex publication_date 2006/09/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

P-wave pentaquarks with strangeness +1, I=0, and J^P=1/2⁺ are studied in the nonrelativistic 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, \ensuremathΘ⁺, is found to be suppressed when the contribution of III is increased. Spin structure of the dominant components of the wave function is studied.

Citations

• Study of pentaquarks on the lattice with overlap fermions
• Diquarks and Exotic Spectroscopy
• Pentaquark decay width in QCD sum rules