Pentaquark spectrum in string dynamics

Details Pentaquark spectrum in string dynamics Pentaquark spectrum in string dynamics

2003-10-09

arxiv.org/abs/hep-ph/0310118v3

Phys.Lett. B578 (2004) 318-322

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

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.

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