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

Levan R. Surguladze
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Abstract

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 effect on α_s(M_Z) from the Z decay is only about 0.1% and in the τdecay case the net effect is negligible, as expected.

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Levan R. Surguladze. 1998-03-02. O(α^nα_s^m) Corrections in e^+e^- Annihilation and τDecay. https://arxiv.org/abs/hep-ph/9803211

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