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Article
Report number	hep-ph/0408176
Title	Understanding penta quark with various quark models
Author(s)	Ping, Jia-lun (Nanjing Normal U., Sch. Phys. Sci. Technol. ; Nanjing U. ; Shandong U.) ; Qing, Di (CERN) ; Wang, Fan (Nanjing U.) ; Goldman, J.Terrance (Los Alamos)
Publication	2004
Imprint	2004-08
Number of pages	14
In:	Phys. Lett. B 602 (2004) 197-204
DOI	10.1016/j.physletb.2004.10.008
Subject category	Particle Physics - Phenomenology
Abstract	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.
Copyright/License	Copyright © unknown. Published by Elsevier B.V. (License: CC-BY-3.0)

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