Two-Loop Correction to Bhabha Scattering
نویسنده
چکیده
We present the two-loop virtual QED corrections to ee ! + and Bhabha scattering in dimensional regularization. The results are expressed in terms of polylogarithms. The form of the infrared divergences agrees with previous expectations. These results are a crucial ingredient in the complete next-to-next-to-leading order QED corrections to these processes. A future application will be to reduce theoretical uncertainties associated with luminosity measurements at ee colliders. The calculation also tests methods that may be applied to analogous QCD processes. Submitted to Physical Review D ?Research supported by the US Department of Energy under grant DE-FG03-91ER40662. yResearch supported by the US Department of Energy under grant DE-AC03-76SF00515.
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