English

Is D_s(2700) a charmed tetraquark state ?

High Energy Physics - Phenomenology 2015-05-13 v3

Abstract

In this article, we take the point of view that the Ds(2700)D_s(2700) be a tetraquark state, which consists of a scalar diquark and a vector antidiquark, and calculate its mass with the QCD sum rules. The numerical result indicates that the mass of the vector charmed tetraquark state is about MV=(3.75±0.18)GeVM_V=(3.75\pm0.18)\rm{GeV} or MV=(3.71±0.15)GeVM_V=(3.71\pm0.15)\rm{GeV} from different sum rules, which is about 1GeV1\rm{GeV} larger than the experimental data. Such tetraquark component should be very small in the Ds(2700)D_s(2700).

Keywords

Cite

@article{arxiv.0708.0155,
  title  = {Is D_s(2700) a charmed tetraquark state ?},
  author = {Zhi-Gang Wang},
  journal= {arXiv preprint arXiv:0708.0155},
  year   = {2015}
}

Comments

12 pages, 3 figures, extended version

R2 v1 2026-06-21T09:03:56.160Z