Pentaquark spectrum in string dynamics

Abstract

The masses of $uudd\bar{s}$ and $uudd\bar{d}$ pentaquarks are evaluated in a framework of the Effective Hamiltonian approach to QCD using the Jaffe-Wilczek $[ud{]}^2\bar{q}$ approximation. The mass of the $[ud{]}^2\bar{s}$ state is found to be $\sim 300-500$ MeV higher than the observed ${\Theta }^{+}(1540)$ mass.

6 pages, 1 figure included, LaTeX2e; several references added; misprints corrected; to appear in Physics Letters B

References in corpus (1)

• Interpretation of the Theta+ as an isotensor pentaquark with weakly decaying partners

Cited by in corpus (21)

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• Pentaquarks: Review on Models and Solitonic Calculations of Antidecuplet Magnetic Moments
• Present status on experimental search for pentaquarks
• Spin 3/2 Penta-quarks in anisotropic lattice QCD
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• Anti-charmed pentaquark from B decays
• Pentaquarks $uudd\bar{q}$ with One Color Sextet Diquark
• Phenomenological constraints on the Jaffe-Wilczek model of pentaquarks
• Structure and decay width of Θ^+ in a one-gluon exchange model
• Pentaquarks in string dynamics
• Multi-quark states
• Some (further) Comments on the Theta(1540) Pentaquark
• Pentaquarks in the Jaffe-Wilczek approximation
• Relativistic Calculation of the Width of the Theta (1540) Pentaquark