Automatic evaluation of UV and R 2 terms for beyond the Standard Model Lagrangians: A proof-of-principle

Published: 1 December 2015| Version 1 | DOI: 10.17632/b8wjj829m5.1
Celine Degrande


Abstract The computation of renormalized one-loop amplitudes in quantum field theory requires not only the knowledge of the Lagrangian density and the corresponding Feynman rules, but also that of the ultraviolet counterterms. More in general, and depending also on the method used in the actual computation of the one-loop amplitudes, additional interactions might be needed. One example is that of the ^(R2)rational terms in the OPP method. In this paper, we argue that the determination of all elemen... Title of program: FeynRules-2.1 with NLOCT Catalogue Id: AEDI_v2_1 Nature of problem The new version of FeynRules renormalises and computes with the new NLOCT package the ultraviolet counterterms and the rational R 2 terms induced by one-loop amplitudes. The resulting vertices can be exported in the UFO format to event generators such as MadGraph5_aMC@NLO. Versions of this program held in the CPC repository in Mendeley Data AEDI_v1_0; FeynRules; 10.1016/j.cpc.2009.02.018 AEDI_v1_1; "FeynRules"; 10.1016/j.cpc.2011.06.009 AEDI_v2_0; FeynRules 2.0; 10.1016/j.cpc.2014.04.012 AEDI_v2_1; FeynRules-2.1 with NLOCT; 10.1016/j.cpc.2015.08.015 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)



Computational Physics