On master integrals for two loop Bhabha scattering

Abstract

All scalar master integrals (MIs) for massive 2-loop QED Bhabha scattering are identified. The 2- and 3-point MIs have been calculated in terms of harmonic polylogarithms with the differential equation method. The calculation of 4-point MIs is underway. We sketch some alternative methods which help to solve (mainly) singularities of some MIs.

Comments: Submitted to the proceedings of the International Conference on Linear Colliders LCWS-04, 19--23 April 2004, Paris, France