Triangle diagram, Distance Geometry and Symmetries of Feynman Integrals

Autor:	Kol, Barak, Mazumdar, Subhajit
Rok vydání:	2019
Předmět:	High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP03(2020)156
Popis:	We study the most general triangle diagram through the Symmetries of Feynman Integrals (SFI) approach. The SFI equation system is obtained and presented in a simple basis. The system is solved providing a novel derivation of an essentially known expression. We stress a description of the underlying geometry in terms of the Distance Geometry of a tetrahedron discussed by Davydychev-Delbourgo [1], a tetrahedron which is the dual on-shell diagram. In addition, the singular locus is identified and the diagram's value on the locus's two components is expressed as a linear combination of descendant bubble diagrams. The massless triangle and the associated magic connection are revisited. Comment: 29 pages, JHEP published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1909.04055 Zobrazit plný text záznamu View this record from Arxiv