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On the massive two-loop corrections to Bhabha scattering

M. Czakon·J. Gluza·T. Riemann
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Abstract

We overview the general status of higher order corrections to Bhabha scattering and review recent progress in the determination of the two-loop virtual corrections. Quite recently, they were derived from combining a massless calculation and contributions with electron sub-loops. For a massive calculation, the self-energy and vertex master integrals are known, while most of the two-loop boxes are not. We demonstrate with an example that a study of systems of differential equations, combined with Mellin-Barnes representations for single masters, might open a way for their systematic calculation.

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M. Czakon, J. Gluza, T. Riemann. 2005-11-15. On the massive two-loop corrections to Bhabha scattering. https://arxiv.org/abs/hep-ph/0511187

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