https://doi.org/10.1051/epjconf/201612504008
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
* e-mail: bednya@theor.jinr.ru
** e-mail: pikelner@theor.jinr.ru, on leave from BLTP, JINR
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
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