Scalar or Vector Tetraquark State Candidate: Zc(4100) *
Zhi-Gang Wang
Fig. 3 The mass with variation of the Borel parameter $T^2$ for the $[uc]_{\tilde{A}}[\bar{d}\bar{c}]_{\tilde{A}}$ type scalar tetraquark state at the energy scale $\mu=1.4\,\rm{GeV}$, the region between the two perpendicular line is the Borel window.