EPJ Web Conf.
Volume 125, 201619th International Seminar on High Energy Physics (QUARKS-2016)
|Number of page(s)||6|
|Section||4. Quantum Chromodynamics and strong interactions|
|Published online||28 October 2016|
On the four-loop strong coupling beta-function in the SM
1 Joint Institute for Nuclear Research, 141980 Dubna, Russia
2 II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg Germany
Published online: 28 October 2016
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.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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