We report on two recent multiloop results in QED: (i) the four-loop corrections to the conversion relations between the QED charge renormalized in the on-shell and MS schemes; (ii) analytical evaluation of a class of asymptotic contributions to the muon anomaly at five-loops.
Automated one-loop calculations in four and D dimensions
✍ Scribed by T. Hahn; M. Pérez-Victoria
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 737 KB
- Volume
- 118
- Category
- Article
- ISSN
- 0010-4655
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✦ Synopsis
Two program packages are presented for evaluating one-loop amplitudes. They can work either in dimensional regularization or in constrained differential renormalization. The latter method is found at the one-loop level to be equivalent to regularization by dimensional reduction. (~)
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