Pentaquarks in string dynamics

Details Pentaquarks in string dynamics Pentaquarks in string dynamics

2004-09-27

arxiv.org/abs/hep-ph/0409304v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages. Based on talk by I.M.Narodetskii at BEACH 2004, 6th International Conference on Hyperons, Charm and Beauty Hadrons, I

Scientific paper

10.1016/j.nuclphysbps.2005.01.06

The masses of $uudd\bar s $, $uudd\bar d$, and $uuss\bar d$ pentaquarks are evaluated in a framework of both the Effective Hamiltonian approach to QCD and spinless Salpeter using the Jaffe-Wilczek diquark approximation and the string interaction for the diquark-diquark-antiquark system. The masses of the light pentaquarks are found to be in the region above 2 GeV. The similar calculations yield the mass of $[ud]^2\bar c$ pentaquark $\sim$ 3250 MeV and $[ud]^2\bar b$ pentaquark $\sim$ 6509 MeV.

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