GoSam 2.0: a tool for automated one-loop calculations

TL;DR

GoSam 2.0 is an advanced software package that automates one-loop quantum corrections calculations for complex particle processes, integrating with Monte Carlo tools for comprehensive collider physics simulations.

Contribution

It introduces an extended interface and enhanced capabilities for automated NLO calculations in multi-particle processes within and beyond the Standard Model.

Findings

Demonstrates applicability to a wide range of multi-particle processes

Enables fully differential NLO results with parton showering

Supports calculations beyond the Standard Model

Abstract

We present the version 2.0 of the program package GoSam, which is a public program package to compute one-loop QCD and/or electroweak corrections to multi-particle processes within and beyond the Standard Model. 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 illustrate the wide range of applicability of the code by showing phenomenological results for multi-particle processes at NLO, both within and beyond the Standard Model.