Several compact ssscc̄ pentaquark resonances are predicted in a potential quark model. The Hamiltonian is the best available one, which reproduces the masses of the low-lying charmed and strange hadrons well. Full five-body calculations are carried out by the use of the Gaussian expansion method, and the relevant baryon-meson thresholds are taken into account explicitly. Employing the real scaling method, we predict four sharp resonances, JP = 1∕2− ( E= 5180 MeV, Γ = 20 MeV), 5∕2− (5645 MeV, 30 MeV), 5∕2− (5670 MeV, 50 MeV), and 1∕2+ (5360 MeV, 80 MeV). These are the candidates of compact pentaquark resonance states from the current best quark model, which should be confirmed either by experiments or lattice QCD calculations.
|Publication status||Published - Jun 29 2019|
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