Understanding penta quark with various quark models

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.

14 pages, 7 figures

References in corpus (21)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Diquarks and Exotic Spectroscopy
• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei
• Evidence for the positive-strangeness pentaquark ${\Theta }^{+}$ in photoproduction with the SAPHIR detector at ELSA
• A Diquark-Triquark Model for the KN Pentaquark
• Three-Quark Potential in SU(3) Lattice QCD
• Quark Delocalization, Color Screening, and Nuclear Intermediate Range Attraction
• Understanding Pentaquark States in QCD
• Quark Delocalization, Color Screening and Dibaryons
• Pentaquark in the Skyrme Model
• Quark Delocalization, Color Screening Model and Nucleon-Baryon Scattering
• The d* dibaryon in the extended quark-delocalization, color-screening model
• ${\Theta }^{+}$ in a chiral constituent quark model and its interpolating fields
• Systematic Theoretical Search for Dibaryons in a Relativistic Model
• Is nucleon spin structure inconsistent with constituent quark model?
• Pentaquark spectrum in string dynamics
• The NN phase shifts in the extended quark-delocalization, color-screening model

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