Pentaquarks in string dynamics
I. M. Narodetskii, C. Semay, B. Silvestre-Brac, Yu. A. Simonov
Abstract
The masses of uudd s , uudd d, and uuss 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 c pentaquark 3250 MeV and [ud]2 b pentaquark 6509 MeV.
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