Recent advances in the $\mu\!-\!e$ scattering amplitude at NNLO in QED

William Javier Torres Bobadilla
2020 Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019)   unpublished
In this talk, we review the recent developments of the next-to-next-to leading order contribution to the µe-elastic scattering. We focus our discussion on the interference between the two-loop and the Born amplitude. In particular, we discuss the analytic reduction of the two-loop amplitude by means of the integrand reduction methods and the application of the integration-by-parts identities. On top of it, we show preliminary results for the ultraviolet renormalisation of the latter.
doi:10.22323/1.364.0676 fatcat:oo54empubrdp5lijecgfihxolq