MadGraph/MadEvent v4 : The new web generation

Summary, in English

We present the latest developments of the MadGraph/MadEvent Monte Carlo event generator and several applications to hadron collider physics. In the current version events at the parton, hadron and detector level can be generated directly from a web interface, for arbitrary processes in the Standard Model and in several physics scenarios beyond it (HEFT, MSSM, 2HDM). The most important additions are: a new framework for implementing user-defined new physics models; a standalone running mode for creating and testing matrix elements; generation of events corresponding to different processes, such as signal(s) and backgrounds, in the same run; two platforms for data analysis, where events are accessible at the parton, hadron and detector level; and the generation of inclusive multi-jet samples by combining parton-level events with parton showers. To illustrate the new capabilities of the package some applications to hadron collider physics are presented: I. Higgs search in pp H W⁺W^-: signal and backgrounds. II. Higgs CP properties: pp Hjj in the HEFT. III. Spin of a new resonance from lepton angular distributions. IV. Single-top and Higgs associated production in a generic 2HDM. V. Comparison of strong SUSY pair production at the SPS points. VI. Inclusive W+jets matched samples: comparison with Tevatron data.

• Author: Johan Alwall; Pavel Demin; Simon De Visscher; Rikkert Frederix; Michel Herquet; Fabio Maltoni; Tilman Plehn; David L. Rainwater; Tim Stelzer
• Publishing year: 2007-09-01
• Language: English
• Publication/Series: Journal of High Energy Physics
• Volume: 2007
• Issue: 9
• Links: http://dx.doi.org/10.1088/1126-6708/2007/09/028
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: Beyond standard model; Hadronic colliders; Standard model
• Status: Published
• ISBN/ISSN/Other: ISSN: 1029-8479