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Pentaquarks in the string dynamics

Abstract : 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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http://hal.in2p3.fr/in2p3-00023330
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Submitted on : Tuesday, November 23, 2004 - 9:44:55 AM
Last modification on : Thursday, November 19, 2020 - 12:58:39 PM

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I.M. Narodetskii, C. Semay, B. Silvestre-Brac, Yu.A. Simonov. Pentaquarks in the string dynamics. 6th International Conference on Hyperons, Charm and Beauty Hadrons, BEACH 2004, Jun 2004, Chicago, Illinois, United States. pp.383-387, ⟨10.1016/j.nuclphysbps.2005.01.064⟩. ⟨in2p3-00023330⟩

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