paper

Analysis of the pentaquark states in the diquark model with QCD sum rules

arXiv:1508.04189 · doi:10.1140/epjc/s10052-016-3880-8

Abstract

In this article, we present the scalar-diquark-scalar-diquark-antiquark type and scalar-diquark-axialvector-diquark-antiquark type pentaquark configurations in the diquark model, and study the masses and pole residues of the hidden-charmed pentaquark states in details with the QCD sum rules by extending our previous work on the and hidden-charmed pentaquark states. We calculate the contributions of the vacuum condensates up to dimension-10 in the operator product expansion by constructing both the scalar-diquark-scalar-diquark-antiquark type and scalar-diquark-axialvector-diquark-antiquark type interpolating currents. The present predictions of the masses can be confronted to the LHCb experimental data in the future.

20 pages, 17 figures. arXiv admin note: substantial text overlap with arXiv:1508.01468

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