论文标题
QCD总规则的光双线混合状态
Light double-gluon hybrid states from QCD sum rules
论文作者
论文摘要
我们使用Quark-Gluon内容$ \ bar Q Q Q gg $（$ q = u/d $）和$ \ bar s s s gg $研究了双光luon混合状态。我们构建了具有各种量子数的十二个双胶质混合流，由于两个Gluon场之间的某些内部对称性，其中五个被认为为零。我们使用其余的七个电流执行QCD总规则分析。尤其是，具有异国量子数$ j^{pc} = 2^{+ - } $的双 - 葡萄糖混合状态的质量被计算为$ m_ {| \ bar q q q gg; 2^{+ - } {+ - } \ rangle} = 2.26^= 2.26^{+0.20} {+0.20} {+0.20} _ { - 0.25} $ { - 0.25} $ { - { - 0.25} $ { - { - 0.25} $ gev gg; 2^{+ - } \ rangle} = 2.38^{+0.19} _ { - 0.25} $ gev。还研究了他们的两种和三膜衰减模式。
We study the double-gluon hybrid states with the quark-gluon contents $\bar q q gg$ ($q=u/d$) and $\bar s s gg$. We construct twelve double-gluon hybrid currents with various quantum numbers, five of which are found to be zero due to some internal symmetries between the two gluon fields. We use the rest seven currents to perform QCD sum rule analyses. Especially, the masses of the double-gluon hybrid states with the exotic quantum number $J^{PC} = 2^{+-}$ are calculated to be $M_{|\bar q q gg;2^{+-}\rangle} = 2.26^{+0.20}_{-0.25}$ GeV and $M_{|\bar s s gg;2^{+-}\rangle} = 2.38^{+0.19}_{-0.25}$ GeV. Their two- and three-meson decay patterns are also investigated.
