We present a new multi-channel integration method and its implementation in the multi-purpose event generator MadEvent, which is based on MadGraph. Given a process, MadGraph automatically identifies all the relevant subprocesses, generates both the amplitudes and the mappings needed for an efficient integration over the phase space, and passes them to MadEvent. As a result, a process-specific, stand-alone code is produced that allows the user to calculate cross sections and produce unweighted events in a standard output format. Several examples are given for processes that are relevant for physics studies at present and forthcoming colliders.
Journal of High Energy Physics
- Pub Date:
- February 2003
- Standard Model QCD Hadronic Colliders;
- High Energy Physics - Phenomenology
- 11 pages, MadGraph home page at http://madgraph.physics.uiuc.edu