On the four-loop strong coupling beta-function in the SM

2016/09/08 by A. V. Bednyakov, A. F. Pikelner · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1051/epjconf/201612504008

6 pages, 2 figures, submitted to Proceedings of 19th International Seminar on High Energy Physics "QUARKS-2016", Pushkin, Russia, May-June, 2016

arxiv created 2016/09/08 · arxiv updated 2016/11/23

Abstract

In the talk the leading four-loop contribution to the beta-function of the strong coupling in the SM is discussed. Some details of calculation techniques are provided. Special attention is paid to the ambiguity due to utilized γ₅ treatment and a particular prescription with anticommuting γ₅ is advocated. As a by-product of our computation the four-loop beta-function in QCD with "gluino" is also obtained.

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