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Estimations of Order alpha_s^3 and alpha_s^4 Corrections to Mass-Dependent Observables

K. G. Chetyrkin·B. A. Kniehl·A. Sirlin
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Abstract

A simple procedure to estimate O(alpha_s^3) and O(alpha_s^4) corrections to mass-dependent observables is conjectured. The method is tested in a number of cases where the O(alpha_s^3) contribution is exactly known, and reasonable agreement is found.

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K. G. Chetyrkin, B. A. Kniehl, A. Sirlin. 1997-03-04. Estimations of Order alpha_s^3 and alpha_s^4 Corrections to Mass-Dependent Observables. https://doi.org/10.1016/s0370-2693(97)00472-3

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