Understanding penta quark with various quark models

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The pentaquark state recently discovered has been studied with three quark models which either fit the nucleon spin structure or the $NN$ scattering. A minimum $Θ^+$ mass of 1620 MeV is obtained both for the ${1/2}^\pm$ state. The mixing of various color structure configurations, which would reduce the mass of the penta-quark state, should be taking into account in the calculation of penta-quark mass.
14 pages, 7 figures

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/177735

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0408176
 http://arxiv.org/abs/hep-ph/0408176
 Phys.Lett.B602:197-204,2004
 doi:10.1016/j.physletb.2004.10.008

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arXiv