O(α^nα_s^m) Corrections in e^+e^- Annihilation and τDecay

Levan R. Surguladze

The results of evaluation of mixed QED X QCD corrections to R(s) in e^+e^- annihilation and R_τ in hadronic decay of the τlepton to O(α^nα_s^m), m+n \leq 3, are presented. The net…