[SLAC Pubs and Reports]
First Order QED Corrections to the Parity-Violating Asymmetry in Moller Scattering
We compute a full set of the first order QED corrections to the
parity-violating observables in polarized Møller 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 ALR to the
low-energy value of the weak mixing angle sin2θW.
Our results are applicable to the recent measurement of ALR by the
SLAC E158 collaboration, as well as to the future parity violation experiments.
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