https://doi.org/10.1140/epja/s10050-024-01388-2
Regular Article - Theoretical Physics
Possible structure of 
1
Department of Physics, Liaoning Normal University, 116029, Dalian, China
2
Center for Theoretical and Experimental High Energy Physics, Liaoning Normal University, 116029, Dalian, China
Received:
21
May
2024
Accepted:
26
July
2024
Published online:
10
September
2024
Recently, a hadronic state, named , about 2.92 GeV with 
was observed in LHCb experiment. It is the first observation of a doubly charged open-charm tetraquark with minimal quark constant ![$$[c\bar{s}u\bar{d}]$$](/articles/epja/abs/2024/09/10050_2024_Article_1388/10050_2024_Article_1388_tex_eq5.png)
, and hence has a peculiar importance. In this paper, we examine the diquark-antidiquark interpretation for the structure of in the configurations of ![$$[3_c]_{\bar{s}\bar{d}}\otimes [\bar{3}_c]_{cu}$$](/articles/epja/abs/2024/09/10050_2024_Article_1388/10050_2024_Article_1388_tex_eq7.png)
in the framework of QCD sum rules up to dimension 8 condensate in the operator product expansion. Numerical results indicated that the observed could be embedded into the 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.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
