2019/12/16 by Joshua Davies, Florian Herren, Colin Poole +2 · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1103/physrevlett.124.071803
published as Phys. Rev. Lett. 124, 071803 (2020) · 6 pages, 2 figures
arxiv created 2019/12/16 · arxiv updated 2020/02/26
We compute the beta functions of the three Standard Model gauge couplings to four-loop order in the modified minimal subtraction scheme. At this order a proper definition of γ5 in D=4-2ε space-time dimensions is required; however, in our calculation we determine the γ5-dependent terms by exploiting relations with beta function coefficients at lower loop orders.