Massless propagators: applications in QCD and QED

Abstract

We report on two recent results based on the evaluation of five-loop massless propagators in QCD and QED: (i) corrections of order ${\alpha }_s^4$ to the absorptive part of the polarization function in QCD with $n_f=3$;(ii) the five-loop contribution to the $\beta$ function of quenched QED.

7 pages, contribution to the 8-th International Symposium on Radiative Corrections (RADCOR), October 1-5 2007, Florence, Italy

References in corpus (1)

• Hadronic Z- and tau-Decays in Order alpha_s^4

Cited by in corpus (6)

• The Renormalization Scale-Setting Problem in QCD
• Vector Correlator in Massless QCD at Order O(alpha_s^4) and the QED beta-function at five loop
• Complete renormalization of QCD at five loops
• Towards the five-loop Beta function for a general gauge group
• Large N flavor beta-functions: a recap
• Fermion Traces Without Evanescence