Foundation and generalization of the expansion by regions

@article{Jantzen2011FoundationAG,
  title={Foundation and generalization of the expansion by regions},
  author={B. Jantzen},
  journal={Journal of High Energy Physics},
  year={2011},
  volume={2011},
  pages={1-82}
}
  • B. Jantzen
  • Published 2011
  • Physics
  • Journal of High Energy Physics
A bstractThe “expansion by regions” is a method of asymptotic expansion developed by Beneke and Smirnov in 1997. It expands the integrand according to the scaling prescriptions of a set of regions and integrates all expanded terms over the whole integration domain. This method has been applied successfully to many complicated loop integrals, but a general proof for its correctness has still been missing.This paper shows how the expansion by regions manages to reproduce the exact result… Expand
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