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arXiv 0907.1577hep-phhep-ex
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胶子-球对偶与球对偶

Gluon-Glueball Duality and Glueball Searches

Shmuel Nussinov, Robert Shrock

摘要:

我们讨论了类似于夸克-强子对偶的胶子-胶球对偶的概念。我们把这个想法应用到重正夸克偶素$Q\bar Q \to γg g$的辐射衰变中,它已经被用来寻找胶球。对偶性首先在两个简化的背景下介绍:(i)没有任何轻夸克的假设版本的QCD和(ii)在大- $N_c$限制的QCD。然后,我们讨论了这种对偶性的近似形式可以在真正的QCD,在辐射orthoquarkonium衰变的$gg$子系统的时间演化的时间尺度的基础上举行。我们应用这个概念的胶子胶球的对偶性,提出了一种方法,可能是有用的实验搜索胶球。

英文摘要:

We discuss a notion of gluon-glueball duality analogous to quark-hadron duality. We apply this idea to the radiative decay of heavy orthoquarkonium, $Q\bar Q \to γg g$, which has been used to search for glueballs. The duality is first introduced in two simplified contexts: (i) a hypothetical version of QCD without any light quarks and (ii) QCD in the large-$N_c$ limit. We then discuss how an approximate form of this duality could hold in real QCD, based on a hierarchy of time scales in the temporal evolution of the $gg$ subsystem in radiative orthoquarkonium decay. We apply this notion of gluon-glueball duality to suggest a method that could be useful in experimental searches for glueballs.

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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