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Padé approximants, optimal renormalization scales, and momentum flow in Feynman diagrams
We show that the Padé Approximant (PA) approach for resummation of perturbative series in QCD provides a systematic method for approximating the flow of momentum in Feynman diagrams. In the large-$\beta_0$ limit, diagonal PA's generalize the Brodsky-Lepage-Mackenzie (BLM) scale-setting method t...
| Autores principales: | , , , , |
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| Lenguaje: | eng |
| Publicado: |
1997
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.56.6980 http://cds.cern.ch/record/328504 |