Automated one-loop calculations with GoSam 2.0

TL;DR

GoSam 2.0 is a software package that automates one-loop calculations for multi-particle processes, enhancing compatibility with Monte Carlo tools for comprehensive NLO predictions in particle physics.

Contribution

This work introduces version 2.0 of GoSam, extending its interface and capabilities for automated NLO calculations across a broad range of processes.

Findings

Enhanced interface with Monte Carlo programs for flexible NLO computations

Applicable to Standard Model and beyond Standard Model processes

Demonstrated wide range of multi-particle process calculations

Abstract

We present the version 2.0 of the program GoSam, which is a public program package to compute one-loop corrections to multi-particle processes. The extended version of the "Binoth-Les-Houches-Accord" interface to Monte Carlo programs is also implemented. This allows a large flexibility regarding the combination of the code with various Monte Carlo programs to produce fully differential NLO results, including the possibility of parton showering and hadronisation. We describe the new features of the code and illustrate the wide range of applicability for multi-particle processes at NLO, both within and beyond the Standard Model.