Four and Three Loop Calculations in QCD: Theory and Applications
classification
✦ hep-ph
keywords
calculationsloopalphaanalyticanalyticalapplicationsbosonbriefly
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The talk briefly reviews the current state of the art in doing multiloop QCD calculations in a completely analytic way. In particular, we discuss recent analytical calculation of 4-loop O(alpha_s**3) gluino contribution to R(s) and its implications to the Z boson and tau-lepton decay rates.
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