Systematic approximation of multi-scale Feynman integrals
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Publication:1783842
DOI10.1007/JHEP08(2018)111zbMATH Open1396.81095arXiv1804.06824OpenAlexW3123155954WikidataQ129351424 ScholiaQ129351424MaRDI QIDQ1783842
Author name not available (Why is that?)
Publication date: 21 September 2018
Published in: (Search for Journal in Brave)
Abstract: An algorithm for the systematic analytical approximation of multi-scale Feynman integrals is presented. The algorithm produces algebraic expressions as functions of the kinematical parameters and mass scales appearing in the Feynman integrals, allowing for fast numerical evaluation. The results are valid in all kinematical regions, both above and below thresholds, up to in principle arbitrary orders in the dimensional regulator. The scope of the algorithm is demonstrated by presenting results for selected two-loop three-point and four-point integrals with an internal mass scale that appear in the two-loop amplitudes for Higgs+jet production.
Full work available at URL: https://arxiv.org/abs/1804.06824
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