Understanding penta quark with various quark models

Details Understanding penta quark with various quark models Understanding penta quark with various quark models

2004-08-16

arxiv.org/abs/hep-ph/0408176v1

Phys.Lett.B602:197-204,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 7 figures

Scientific paper

10.1016/j.physletb.2004.10.008

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 $\Theta^+$ 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.

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