The GAMBIT Universal Model Machine: from Lagrangians to likelihoods

Sanjay Bloor, Tomás E. Gonzalo, Pat Scott, Christopher Chang, Are Raklev, José Eliel Camargo-Molina, Anders Kvellestad, Janina J. Renk, Peter Athron, Csaba Balázs

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12 Citations (Scopus)

Abstract

We introduce the GAMBIT Universal Model Machine (GUM), a tool for automatically generating code for the global fitting software framework GAMBIT, based on Lagrangian-level inputs. GUM accepts models written symbolically in FeynRules and SARAH formats, and can use either tool along with MadGraph and CalcHEP to generate GAMBIT model, collider, dark matter, decay and spectrum code, as well as GAMBIT interfaces to corresponding versions of SPheno, micrOMEGAs, Pythia and Vevacious (C[InlineMediaObject not available: see fulltext.]). In this paper we describe the features, methods, usage, pathways, assumptions and current limitations of GUM. We also give a fully worked example, consisting of the addition of a Majorana fermion simplified dark matter model with a scalar mediator to GAMBIT via GUM, and carry out a corresponding fit.

Original languageEnglish
Article number1103
Number of pages30
JournalEuropean Physical Journal C
Volume81
Issue number12
DOIs
Publication statusPublished - 15 Dec 2021

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