Theoretical improvements for luminosity monitoring at low energies

Abstract

A comparison of theoretical results on NNLO leptonic and hadronic corrections to Bhabha scattering with the Monte Carlo generator BabaYaga@NLO used at meson factories is given. Complete NLO virtual corrections to the $e^+e^- \to \mu^+ \mu^- \gamma$ process are discussed.Comment: 8 pages, 4 figs, presented by J.Gluza at Radcor 201