COMPUTING TECHNIQUES FOR 2-LOOP CORRECTIONS TO ANOMALOUS MAGNETIC-MOMENTS OF LEPTONS

Authors
CZARNECKI A KRAUSE B
Citation
A. Czarnecki et B. Krause, COMPUTING TECHNIQUES FOR 2-LOOP CORRECTIONS TO ANOMALOUS MAGNETIC-MOMENTS OF LEPTONS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 389(1-2), 1997, pp. 314-317
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
389
Issue
1-2
Year of publication
1997
Pages
314 - 317
Database
ISI
SICI code
0168-9002(1997)389:1-2<314:CTF2CT>2.0.ZU;2-A
Abstract
Two-loop electroweak corrections to the electron, muon, and tau lepton anomalous magnetic moments have been computed recently. Effects of ha dronic contributions to the photon propagator in two-loop QED correcti ons have also been reanalysed. The common technique used in both calcu lations was asymptotic expansion of Feynman diagrams in the ratio of l epton mass to some heavy mass scale. In this talk we present some deta ils of this method paying particular attention to the expansion of mul ti-scale diagrams.