Analysis of the tensor–tensor type scalar tetraquark states with QCD sum rules

Author:

Wang, Zhi-Gang   Zhang, Jun-Xia   

Journal:

The European Physical Journal C

Issue Date:

2016

Abstract(summary):

In this article, we study the ground states and the first radial excited states of the tensor-tensor type scalar hidden-charm tetraquark states with the QCD sum rules. We separate the ground state contributions from the first radial excited state contributions unambiguously, and obtain the QCD sum rules for the ground states and the first radial excited states, respectively. Then we search for the Borel parameters and continuum threshold parameters according to four criteria and obtain the masses of the tensor-tensor type scalar hidden-charm tetraquark states, which can be confronted with the experimental data in the future.