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arXiv 1410.6969hep-ph
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低能电弱测量中的双环效应

Two-Loop Effects in Low-Energy Electroweak Measurements

A. Aleksejevs, S. Barkanova, V. Zykunov

摘要:

我们概述了最近的结果的两个圈的电弱贡献的电子-电子散射截面和不对称性。虽然双环路校正相对于单环路校正被强烈抑制,但它们仍然对偏振不对称性有百分之几的贡献,即使是这种小的贡献也不能被忽略,因为超精密实验,如JLab计划的MOLLER。我们开发的电子-电子散射的NNLO计算技术可以适用于电子-质子过程,电子-正电子碰撞,以及其他涉及轻子的低能实验。

英文摘要:

We outline the recent results on the two-loop electroweak contributions to the electron-electron scattering cross sections and asymmetries. Although the two-loop corrections are strongly suppressed relative to the one-loop corrections, they still contribute a few percent to the polarization asymmetry, and even this small contribution cannot be ignored at for ultra-precision experiments such as MOLLER planned at JLab. The NNLO calculation techniques we developed for the electron-electron scattering can be adapted for electron-proton processes, electron-positron collisions, and other low-energy experiments involving leptons.

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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