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Corrections of order $α_s^3$ to $R_{had}$ in pQCD with light gluinos

K. G. Chetyrkin
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Abstract

By a completely independent analytic calculation made in general covariant gauge we confirm the known result for the massless $α_s^3$ correction to $R_{had}$ and check explicitly its gauge independence. We extend the calculations to include contributions due to a hypothetical existence of a colour octet of (light) neutral fermions known also under the name of gluinos.

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K. G. Chetyrkin. 1996-08-29. Corrections of order $α_s^3$ to $R_{had}$ in pQCD with light gluinos. https://doi.org/10.1016/s0370-2693(96)01478-5

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