2015/01/16 by Zhi-Gang Wang · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1142/s0217732314502071
published as Mod.Phys.Lett.A29(2014)1450207 · 15 pages, 8 figures. arXiv admin note: substantial text overlap with arXiv:1312.1537, arXiv:1312.2652
arxiv created 2015/01/16 · arxiv updated 2015/02/03
In this article, we study the SS type scalar tetraquark state cqcq in details with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in the operator product expansion, and obtain the value MZc=(3.82+0.08-0.08) \rmGeV, which is the lowest mass for the hidden charmed tetraquark states from the QCD sum rules. Furthermore, we calculate the hadronic coupling constants GZcηcπ and GZcDD with the three-point QCD sum rules, then study the strong decays Zc→ ηcπ , DD, and observe that the total width ΓZc≈ 21 \rmMeV. The present predictions can be confronted with the experimental data in the futures at the BESIII, LHCb and Belle-II.