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arXiv 1709.04542hep-ph
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基于QCD求和规则的重夸克偶素($1^{--}$)介子混合

Heavy Quarkonium ($1^{--}$) Meson-Hybrid Mixing from QCD Sum Rules

A. Palameta, J. Ho, D. Harnett, T. G. Steele

摘要:

我们利用QCD Laplace求和规则研究了重夸克偶素矢量$J^{PC}\!=\!1^{--}$通道中常规介子与杂化介子的混合。我们的互相关包括微扰理论和贡献的四维和六维胶子凝聚成正比。我们输入实验确定的粲和bottomonium强子质量到单共振和多共振模型,以测试它们的传统介子和混合组件。在粲偶素部门,我们发现的$J/ψ$和$\approx4.3$ GeV共振介子混合的证据。在底鎓区,我们发现$Υ(1S)$、$Υ(2S)$、$Υ(3S)$和$Υ(4S)$都表现出混合。

英文摘要:

We use QCD Laplace sum-rules to explore mixing between conventional mesons and hybrids in the heavy quarkonium vector $J^{PC}\!=\!1^{--}$ channel. Our cross-correlator includes perturbation theory and contributions proportional to the four-dimensional and six-dimensional gluon condensates. We input experimentally determined charmonium and bottomonium hadron masses into both single and multi-resonance models in order to test them for conventional meson and hybrid components. In the charmonium sector we find evidence for meson-hybrid mixing in the $J/ψ$ and a $\approx4.3$ GeV resonance. In the bottomonium sector, we find that the $Υ(1S)$, $Υ(2S)$, $Υ(3S)$, and $Υ(4S)$ all exhibit mixing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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