1997/03/10 by J. A. M. Vermaseren, S. A. Larin, T. van Ritbergen · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1016/s0370-2693(97)00660-6
published as Phys.Lett. B405 (1997) 327-333 · 11 pages, Latex
arxiv created 1997/03/10 · arxiv updated 2009/11/30
We present the analytical calculation of the four-loop quark mass anomalous dimension in Quantum Chromodynamics within the minimal subtraction scheme. On the basis of this result we find that the so-called invariant quark mass is a very good reference mass for the accurate evolution of the running MS-bar quark mass in phenomenological applications. We also obtain for the first time a complete 4-th order perturbative QCD expression for a physical quantity, the total Higgs boson decay rate into hadrons, and analyze the infrared fixed point for this case.