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

Abstract

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.

Comments: 9 pages, 1 table, 7 figures. Some minor changes in Introduction and Conclusion