piwik-script

English Intern
  • Seminar Elementarteilchenphysik
Theoretische Physik II

Prof. Dr. Andreas Vogt, University of Liverpool, Great Britain

Talk: 31-Oct-2019

Recent four- and five-loop results in QCD

Abstract

We report on recent results in perturbative Quantum Chromodynamics and its generalization to Yang-Mills theories with fermions. We discuss the present status of four-loop (N^3LO) calculations of the splitting functions for the scale dependence (evolution) of the quark and gluon distributions of hadrons.  
Five-loop results are presented for the beta function, i.e., the running of the coupling constant, for the hadronic decay of the Higgs boson in the heavy-top limit and for the lowest moments of five-loop splitting functions.