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arXiv 1609.08666hep-ph
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极化$e^+ e^- \to μ^+ μ^-$过程中电弱修正的低能和高能渐近行为

Low and High Energy Asymptotic Behavior of Electroweak Corrections in Polarized $e^+ e^- \to μ^+ μ^-$ Process

A. G. Aleksejevs, S. G. Barkanova, Yu. M. Bystritskiy, V. A. Zykunov

摘要:

电弱辐射校正将在分析几个即将到来的超精密实验(如Belle-II)中发挥重要作用,因此确保它们完全处于控制之下至关重要。本文概述了纵向极化电子$e^- e^+ \to μ^- μ^+ (γ)$过程宇称破坏不对称性的单圈(NLO)电弱辐射修正的理论和计算方法的最新进展。我们推导出低能量和高能量区域(远低于或高于$Z$ -共振,相应地)的渐近表达式,并分析了领先的贡献。对于大多数能区,我们的结果与基于计算机代数的精确计算符合得很好,可以作为一种快速的替代方法。

英文摘要:

Electroweak radiative corrections will play a major role in the analysis of several upcoming ultra-precision experiments such as Belle-II, so is crucial to make sure that they are fully under control. The article outlines the recent developments in the theoretical and computational approaches to one-loop (NLO) electroweak radiative corrections to the parity-violating asymmetry in $e^- e^+ \to μ^- μ^+ (γ)$ process with longitudinally polarized electrons. We derive asymptotic expressions for low and high energy regions (well below or above $Z$-resonance, correspondingly) and analyze the leading contributions. For most of energy regions, our results are in good agreement with precise computer-algebra based calculation and can used as a quicker alternative.

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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