Pentaquarks in the Jaffe-Wilczek approximation
Narodetskii, I. M. · Semay, C. · Silvestre-Brac, B. · Simonov, Yu. A. · Trusov, M. A.
Original · EN
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 pentaquark masses are found to be in the region above 2 GeV. That indicates that the Goldstone boson exchange effects may play an important role in the light pentaquarks. The same calculations yield the mass of [ud]² c pentaquark 3250 MeV and [ud]² b pentaquark 6509 MeV.
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