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arXiv 0704.2165hep-ph
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在一个回路水平上非极化e^+ e^-到charginos的CP破坏

CP violation in unpolarized e^+ e^- to charginos at one loop level

P. Osland, A. Vereshagin

摘要:

在MSSM框架下研究了e^+ e^-到\tilde χ_i^+ \tilde χ_j^-的CP破坏.虽然这个过程的截面是CP-甚至在树的水平,即使是极化的电子-正电子束,我们表明,它包含一个CP-奇数部分在一个循环的顺序,并有CP-奇数观测量,可以在原则上测量,即使使用非极化的电子-正电子束。简要讨论了有关的图表计算,并显示了选定(箱)图计算的结果。

英文摘要:

We study CP violation in e^+ e^- to \tildeχ_i^+\tildeχ_j^- in the framework of the MSSM. Though the cross section of this process is CP-even at the tree level even for polarized electron-positron beams, we show that it contains a CP-odd part at the one loop order and there are CP-odd observables that can in principle be measured even using unpolarized electron-positron beams. The relevant diagram calculations are briefly discussed and the results of selected (box) diagram computations are shown.

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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