Automation of One-Loop Calculations with GoSam: Present Status and Future Outlook

TL;DR

This paper discusses the GoSam framework for automating one-loop calculations in particle physics, highlighting its features, capabilities, and potential applications in Standard Model and beyond.

Contribution

It presents the current status and future outlook of GoSam, an automated tool for multi-particle one-loop amplitude computations in high-energy physics.

Findings

GoSam efficiently computes one-loop corrections for various processes.

It supports both D-dimensional integrand reduction and tensor decomposition.

The framework is adaptable for theories beyond the Standard Model.

Abstract

In this presentation, we describe the GoSam (Golem/Samurai) framework for the automated computation of multi-particle scattering amplitudes at the one-loop level. The amplitudes are generated analytically in terms of Feynman diagrams, and can be evaluated using either D-dimensional integrand reduction or tensor decomposition. GoSam can be used to compute one-loop corrections to Standard Model (QCD and EW) processes, and it is ready to link generic model files for theories Beyond SM. We show the main features of GoSam through its application to several examples of different complexity.