R(s) and hadronic tau-Decays in Order alphaₛ⁴: technical aspects

Baikov, P. A.; Chetyrkin, K. G.; Kühn, J. H.

doi:10.1016/j.nuclphysbps.2009.03.010

arXiv 2009-06-16 DOI 10.1016/j.nuclphysbps.2009.03.010 0 views

R(s) and hadronic tau-Decays in Order alphaₛ⁴: technical aspects

Baikov, P. A. · Chetyrkin, K. G. · Kühn, J. H.

High Energy Physics - Phenomenology

Original · EN

We report on some technical aspects of our calculation of alphaₛ⁴ corrections to R(s) and the semi-leptonic tau decay width [1-3]. We discuss the inner structure of the result as well as the issue of its correctness. We demonstrate recently appeared independent evidence positively testing one of two components of the full result.

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