Analysis of the ${\frac{3}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules

Abstract

In this article, we construct the axialvector-diquark-scalar-diquark-antiquark type and the axialvector-diquark-axialvector-diquark-antiquark type interpolating currents, and study the $J^P={\frac{3}{2}}^{\pm }$ hidden-charm pentaquark states with the strangeness $S=0,-1,-2,-3$ systematically using the QCD sum rules. The predicted masses of the pentaquark states $P_{uud}^{10\frac{1}{2}}\left({\frac{3}{2}}^{-}\right)$, $P_{uud}^{11\frac{1}{2}}\left({\frac{3}{2}}^{-}\right)$ and $P_{uud}^{11\frac{3}{2}}\left({\frac{3}{2}}^{-}\right)$ are compatible with the experimental value $M_{P_c(4380)}=4380\pm 8\pm 29\mathrm{MeV}$ from the LHCb collaboration, more experimental data are still needed to identify the $P_c(4380)$ unambiguously.

39 pages, 6 figures

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• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
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