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arXiv 0903.5200hep-ph
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用QCD求和规则分析Y（4140）

Analysis of the Y(4140) with QCD sum rules

Zhi-Gang Wang

备注：
14 pages, 11 figures, 3 revision, correct two writing errors
发表信息：
Eur.Phys.J.C63:115-122,2009
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摘要：

本文假设在$J/ψϕ$不变质量分布中存在一个标量$D_s^\ast {\bar D}_s^\ast$分子态，并利用QCD求和规则研究其质量.这些预言在很大程度上依赖于QCD求和规则的两个准则（极点优势和算子乘积展开的收敛性）。质量的值约为$M_{D_s^\ast {\bar D}_s^\ast}=(4.43\pm0.16) \rm{GeV}$，与实验数据不符。$D_s^\ast {\bar D}_s^\ast$可能是一个虚态，与介子Y（4140）无关。不排除其他可能性，例如混合粲偶氮。

英文摘要：

In this article, we assume that there exists a scalar $D_s^\ast {\bar D}_s^\ast$ molecular state in the $J/ψϕ$ invariant mass distribution, and study its mass using the QCD sum rules. The predictions depend heavily on the two criteria (pole dominance and convergence of the operator product expansion) of the QCD sum rules. The value of the mass is about $M_{D_s^\ast {\bar D}_s^\ast}=(4.43\pm0.16) \rm{GeV}$, which is inconsistent with the experimental data. The $D_s^\ast {\bar D}_s^\ast$ is probably a virtual state and not related to the meson Y(4140). Other possibility, such as a hybrid charmonium is not excluded.

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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