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Analysis of the and as pentaquark states in the diquark model with QCD sum rules
In this article, we construct the diquark-diquark-antiquark type
interpolating currents, and study the masses and pole residues of the
and hidden-charmed pentaquark states in
details with the QCD sum rules by calculating the contributions of the vacuum
condensates up to dimension-10 in the operator product expansion. In
calculations, we use the formula to
determine the energy scales of the QCD spectral densities. The present
predictions favor assigning the and to be the
and pentaquark states, respectively.Comment: 18 pages, 5 figure
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