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arXiv 1202.0378hep-ph
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奇偶违反Moller散射不对称性达到双环路水平

Parity violating Moller scattering asymmetry up to the two-loop level

A. G. Aleksejevs, S. G. Barkanova, Yu. M. Bystritskiy, A. N. Ilyichev, E. A. Kuraev, V. A. Zykunov

摘要:

本文研究了$Z$、$W$和$γ$中间态对两圈水平下宇称破坏的Moller散射不对称性的贡献。使用Yennie-Frautschi-Suura分解形式的振幅,我们证明了QED修正,真空极化效应除外,取消在不对称水平。我们得到了玻恩、单圈和部分双圈水平的手征振幅:轻子自能盒、阶梯盒和装饰盒。我们的计算是相关的超精密11 GeV MOLLER实验计划在杰斐逊实验室和未来的ILC实验。给出了两回路贡献与MOLLER实验精度的数值比较。

英文摘要:

The paper investigates contributions of $Z$, $W$ and $γ$ intermediate states to the parity-violating Moller scattering asymmetry up to two-loop level. Using the Yennie--Frautschi--Suura factorization form for amplitudes, we demonstrate that QED corrections, with an exception of vacuum-polarization effects, cancel at the asymmetry level. We obtain chiral amplitudes at Born, one-loop and partially at two-loop level: boxes with lepton self-energies, ladder boxes and decorated boxes. Our calculations are relevant for the ultra-precise 11 GeV MOLLER experiment planned at Jefferson Laboratory and future ILC experiments. The numerical comparision of the two-loop contributions with the experimental accuracy of MOLLER is provided.

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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