Computing Techniques for Two-Loop Corrections to Anomalous Magnetic Moments of Leptons

Details Computing Techniques for Two-Loop Corrections to Anomalous Magnetic Moments of Leptons Computing Techniques for Two-Loop Corrections to Anomalous Magnetic Moments of Leptons

1996-11-05

arxiv.org/abs/hep-ph/9611241v2

Nucl.Instrum.Meth.A389:314-317,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

Updated Higher Order Hadronic Corrections. Talk given at the 5th International Workshop ``New Computing Techniques in Physics

Scientific paper

10.1016/S0168-9002(97)00113-7

Two-loop electroweak corrections to the electron, muon, and tau lepton anomalous magnetic moments have been computed recently. Effects of hadronic contributions to the photon propagator in two-loop QED corrections have also been reanalysed. The common technique used in both calculations was asymptotic expansion of Feynman diagrams in the ratio of lepton mass to some heavy mass scale. In this talk we present some details of this method paying particular attention to the expansion of multi-scale diagrams.

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