Analysis of the\(QQ\bar{Q}\bar{Q}\)tetraquark states with QCD sum rules

Author:

Zhi-Gang Wang  

Journal:

The European Physical Journal C

Issue Date:

2017

Abstract(summary):

In this article, we study the J(PC) =3D 0(++) and 2(++) Q Q (Q) over bar (Q) over bar tetraquark states with the QCD sum rules, and we obtain the predictions M-X(c c (c) over bar (c) over bar 0(++) =3D 5.99 +/- 0.08 GeV, M-X(c c (c) over bar (c) over bar, 2(++)) =3D 6.09 +/- 0.08 GeV, M-X(b b (b) over bar (b) over bar, 0(++) =3D 18.84 +/- 0.09 GeV M-X(b b (b) over bar (b) over bar, 2(++) =3D 18.85 +/- 0.09 GeV which can be confronted to the experimental data in the future. Furthermore, we illustrate that the diquark-antidiquark type tetraquark state can be taken as a special superposition of a series of meson-meson pairs and that it embodies the net effects.