Automation of the Dipole Subtraction Method in MadGraph/MadEvent

TL;DR

This paper introduces an automated implementation of the dipole subtraction method within MadGraph/MadEvent, enabling efficient NLO QCD calculations for processes with massless and massive particles.

Contribution

It provides a novel automated tool that generates Fortran code for all dipoles needed in NLO QCD computations within the MadGraph framework.

Findings

Automated generation of dipole subtraction terms for NLO QCD processes.

Compatibility with both massless and massive particles.

Integration with MadGraph for streamlined calculations.

Abstract

We present the implementation of the dipole subtraction formalism for the real radiation contributions to any next-to-leading order QCD process in the MadGraph/MadEvent framework. Both massless and massive dipoles are considered. Starting from a specific (n+1)-particle process the package provides a Fortran code for all possible dipoles to all Born processes that constitute the subtraction term to the (n+1)-particle process. The output files are given in the usual "MadGraph StandAlone" style using helicity amplitudes.