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arXiv 0903.0434hep-ph
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γ-γ相互作用:标准模型的一个临界检验

The Gamma-Gamma Interaction : A Critical Test of the Standard Model

Philip Yock

摘要:

来自欧洲核子研究中心大型电子正电子对撞机(LEP)的数据在γ-γ相互作用中的强子产生超过了标准模型的预测,在三个通道中观察到的最高横动量的数量级。这个过程的振幅与夸克电荷的平方和成正比。这些数据暗示了夸克具有单位电荷或更大电荷的模型,以及部分子具有子结构的模型。先前提出的电-强相互作用模型包括这两个特征。连续测量可以用已经提出的线性电子-正电子对撞机中的任何一个进行,即国际线性对撞机(ILC)或紧凑型线性对撞机(CLIC)。然而,采用最近开发的等离子体尾场加速技术的电子-电子对撞机可以提供最经济的选择。最近在费米实验室报道的多μ子事件的独立检查也可以用这种类型的对撞机进行。

英文摘要:

Data from the Large Electron Positron collider (LEP) at CERN on hadron production in gamma-gamma interactions exceed the predictions of the standard model by an order of magnitude at the highest observed transverse momenta in three channels. The amplitude for the process is asymptotically proportional to the sum of the squares of the charges of quarks. The data are suggestive of models where quarks have unit charges, or larger, and where partons have substructure. A previously proposed model of electro-strong interactions includes both these features. Definitive measurements could be made with either of the linear electron-positron colliders that have been proposed, viz. the International Linear Collider (ILC) or the Compact Linear Collider (CLIC). However, an electron-electron collider employing the recently developed plasma wakefield acceleration technique could provide the most affordable option. An independent check of the multi-muon events that were recently reported at Fermilab could also be made with this type of collider.

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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