| Article | |
| Report number | arXiv:1804.06824 ; CERN-TH-2018-078 ; ZU-TH 14/18 ; ZU-TH-14-18 |
| Title | Systematic approximation of multi-scale Feynman integrals |
| Author(s) | Borowka, Sophia (CERN) ; Gehrmann, Thomas (Zurich U.) ; Hulme, Daniel (Zurich U.) |
| Publication | 2018-08-20 |
| Imprint | 2018-04-18 |
| Number of pages | 34 |
| Note | 31 pages + refs , 34 figures. v2 reflects the version published in JHEP. The case of integrals with multiple thresholds has been added, with new plots and text |
| In: | JHEP 08 (2018) 111 |
| DOI | 10.1007/JHEP08(2018)111 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| 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. |
| Copyright/License | publication: (License: CC-BY-4.0) preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Element opprettet 2018-04-20, sist endret 2023-11-29
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