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Reanalysis ofX(4140) as axial-vector tetraquark state with QCD sum rules

Author:
Wang, Zhi-Gang  


Journal:
The European Physical Journal C


Issue Date:
2016


Abstract(summary):

In this article, we take X(4140) as the diquark-antidiquark type cs (c) over bar(s) over bar tetraquark state with J(PC) =3D 1(++), and we study the mass and pole residue with the QCD sum rules in detail by constructing two types of interpolating currents. The numerical results M-XL,M-+ =3D 3.95 +/- 0.09 GeV and M-XH,M-+ =3D 5.00 +/- 0.10 GeV disfavor assigning the X(4140) to the J(PC) =3D 1(++) diquark-antidiquark type cs (c) over bar(s) over bar tetraquark state. Moreover, we obtain the masses of the J(PC) =3D 1(+-)diquark-antidiquark type cs (c) over bar(s) over bar s tetraquark states as a byproduct. The present predictions can be confronted to the experimental data in the future.


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