Possible structure of \(T_{c\bar{s}0}(2900)^{++}\)

Abstract

Recently, a hadronic state, named \(T_{c\bar{s}0}(2900)^{++}\), about 2.92 GeV with \(J^{P}=0^{+}\) was observed in LHCb experiment. It is the first observation of a doubly charged open-charm tetraquark with minimal quark constant \([c\bar{s}u\bar{d}]\), and hence has a peculiar importance. In this paper, we examine the diquark-antidiquark interpretation for the structure of \(T_{c\bar{s}0}(2900)^{++}\) in the configurations of \([3_c]_{\bar{s}\bar{d}}\otimes [\bar{3}_c]_{cu}\) in the framework of QCD sum rules up to dimension 8 condensate in the operator product expansion. Numerical results indicated that the observed \(T_{c\bar{s}0}(2900)^{++}\) could be embedded into the \([3_c]_{\bar{s}\bar{d}}\otimes [\bar{3}_c]_{cu}\) configuration. Furthermore, another doubly charged open-charm tetraquark in diquark-antidiquark configuration with mass about 3.13 GeV is also predicted, which are hopefully measurable in BESIII, BEllEII, and LHCb experiments.