First Order QED Corrections to the Parity-Violating Asymmetry in Moller Scattering

Details First Order QED Corrections to the Parity-Violating Asymmetry in Moller Scattering First Order QED Corrections to the Parity-Violating Asymmetry in Moller Scattering

2005-07-25

arxiv.org/abs/hep-ph/0507287v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 6 figures

Scientific paper

We compute a full set of the first order QED corrections to the parity-violating observables in polarized Moller scattering. We employ a covariant method of removing infrared divergences, computing corrections without introducing any unphysical parameters. When applied to the kinematics of the SLAC E158 experiment, the QED corrections reduce the parity violating asymmetry by 4.5%. We combine our results with the previous calculations of the first-order electroweak corrections and obtain the complete O(alpha) prescription for relating the experimental asymmetry A_LR to the low-energy value of the weak mixing angle. Our results are applicable to the recent measurement of A_LR by the SLAC E158 collaboration, as well as to the future parity violation experiments.

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