论文标题
$ s s \ bar s \ bar s $ tetraquark状态的QCD和规则研究$ j^{pc} = 0^{ - +} $
QCD sum rule studies on the $s s \bar s \bar s$ tetraquark states of $J^{PC} = 0^{-+}$
论文作者
论文摘要
我们应用QCD总规则的方法来研究$ j^{pc} = 0^{ - +} $的$ s s \ bar s $ tetraquark状态。我们构建了所有相关的$ s s \ bar s \ bar s $ tetraquark currents，发现只有两个独立的电流。我们使用它们进一步构建了两个弱关联的混合电流。其中一个导致可靠的QCD总规则结果，并且提取的质量为$ 2.51^{+0.15} _ { - 0.12} $ GEV，这表明$ x（2370）$或$ x（2500）$可以解释为$ ss \ bar s \ bar s $ s $ s $ s $ tetraquark州$ tetraquark $ j} $为了验证这种解释，我们建议进一步研究$ j/ψ\的$ππ/k \ bar k $不变的质谱，到γππη^\ prime/γk\ barkη^\ prime $ prime $ prime $ prime $ prime $ n in besiii中是否存在$ f_0（980）$ resonance。
We apply the method of QCD sum rules to study the $s s \bar s \bar s$ tetraquark states of $J^{PC} = 0^{-+}$. We construct all the relevant $s s \bar s \bar s$ tetraquark currents, and find that there are only two independent ones. We use them to further construct two weakly-correlated mixed currents. One of them leads to reliable QCD sum rule results and the mass is extracted to be $2.51^{+0.15}_{-0.12}$ GeV, suggesting that the $X(2370)$ or the $X(2500)$ can be explained as the $ss\bar s\bar s$ tetraquark state of $J^{PC} = 0^{-+}$. To verify this interpretation, we propose to further study the $ππ/K \bar K$ invariant mass spectra of the $J/ψ\to γππη^\prime/γK \bar K η^\prime$ decays in BESIII to examine whether there exists the $f_0(980)$ resonance.
