Estimating two-loop radiative effects in the MOLLER experiment
Within the on-shell renormalization scheme, two-loop electroweak corrections to the parityviolating polarization asymmetry in the reaction e − e − → e − e − ( γ, γγ ) were estimated for the MOLLER experiment at JLab. The infrared divergence and the imaginary part of the amplitude were taken complete...
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Published in | Physics of atomic nuclei Vol. 76; no. 7; pp. 888 - 900 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.07.2013
Springer |
Subjects | |
Online Access | Get full text |
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Summary: | Within the on-shell renormalization scheme, two-loop electroweak corrections to the parityviolating polarization asymmetry in the reaction
e
−
e
−
→
e
−
e
−
(
γ, γγ
) were estimated for the MOLLER experiment at JLab. The infrared divergence and the imaginary part of the amplitude were taken completely under control. Relevant compact expressions obtained by using asymptotic methods are free from unphysical parameters and are convenient for analysis and for numerical estimations. A numerical analysis revealed a significant scale of two-loop effects and the need for taking them into account in the MOLLER experiment. |
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ISSN: | 1063-7788 1562-692X |
DOI: | 10.1134/S1063778813070028 |