Analysis of the X(6600), X(6900), X(7300) and related tetraquark states with the QCD sum rules

In this work, we re-investigate the mass spectrum of the ground state, first, second and third radial excited states of the diquark-antidiquark type fully-charm tetraquark states with the QCD sum rules plus Regge trajectories. We take account of the CMS and ATLAS experimental data and preform a self-consistent analysis, then try to make possible assignments of the X(6600), X(6900) and X(7300) in the picture of tetraquark states with the JPC =0++ or 1+-.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.

Automated summary

In this study, we re-investigate the mass spectrum of diquark-antidiquark type fully-charm tetraquark states using the QCD sum rules plus Regge trajectories. By taking into account the experimental data from CMS and ATLAS, we perform a self-consistent analysis and propose possible assignments for X(6600), X(6900), and X(7300) within the picture of tetraquark states with the JPC = 0++ or 1+-.