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

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...

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Main Authors Aleksejevs, A. G, Barkanova, S. G, Bystritskiy, Yu. M, Zykunov, V. A
Format Journal Article
LanguageEnglish
Published 27.09.2016
Subjects
Physics - High Energy Physics - Phenomenology
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Summary: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 $e^- e^+ \to \mu^- \mu^+ (\gamma)$ 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.
DOI:10.48550/arxiv.1609.08666