MadGraph5_aMC@NLO is a framework that aims at providing all the elements necessary for SM and BSM phenomenology, such as the computations of cross sections, the generation of hard events and their matching with event generators, and the use of a variety of tools relevant to event manipulation and analysis. Processes can be simulated to LO accuracy for any user-defined Lagrangian, and the NLO accuracy in the case of QCD corrections to SM processes. Matrix elements at the tree- and one-loop-level can also be obtained.
MadGraph5_aMC@NLO is the new version of both MadGraph5 and aMC@NLO that unifies the LO and NLO lines of development of automated tools within the MadGraph family. It therefore supersedes all the MadGraph5 1.5.x versions and all the beta versions of aMC@NLO.
A standard reference for the use of the code is being written. In the meanwhile please contact us: there are many relevant papers, and the appropriate citations must be tailored to physics applications.
The latest stable release can downloaded as a tar.gz package (see the right of this page), or through the Bazaar versioning system, using bzr branch lp:madgraph5
MadGraph5_aMC@NLO needs Python version 2.6 or 2.7 ; gfortran/gcc 4.6 or higher is required for NLO calculations/
Run bin/mg5_aMC and type "help" to learn how to run MadGraph5_aMC@NLO using the command interface, or run the interactive quick-start tutorial by typing "tutorial". Some third-party packages can be installed using the MG5_aMC shell command "install". LO generation can also be done directly online at: http://
All FAQs FAQs for MadGraph5_aMC@NLO
- aMC@NLO compilation issues on MAC OS X
- How to fix: "Command "generate X X > Y Y Y" interrupted with error: KeyError : '1'
- why production and decay cross-section didn't agree.
- FR Model much slower than build-in MG model. Why and how to fix?
- How to add a cluster support / edit the way jobs are submitted on a supported cluster
All bugs Latest bugs reported
Bug #1309409: Compilation errors at CERN lxplus5
Reported on 2014-04-18
Bug #1307493: Crash for VBF Higgs production in aMC@NLO 2.1.1
Reported on 2014-04-14
Bug #1305405: 188.8.131.52 crashes when width set to auto
Reported on 2014-04-10
Bug #1304169: KeyError : 'mul+' while running MadSpin in MadGraph_aMC@NLO v184.108.40.206
Reported on 2014-04-08
Bug #1301845: Event generation problem
Reported on 2014-04-03
All questions Latest questions
xs bias when generating small number of events
Posted on 2014-04-18
Error in generating events and installing pythia
Posted on 2014-04-17
generate_events interrupted with error: ZeroDivisionError : float division
Posted on 2014-04-16
Pythia crashes when running ttbar_2jets
Posted on 2014-04-14
events with weights larger than max_weight in Madspin
Posted on 2014-04-14
All blueprints Latest blueprints
Avoid name clashing between MadEvent/aMC@NLO and UFO model
Registered on 2014-02-21
Scan in mass
Registered on 2011-10-18
automatic detection of zero couplings
Registered on 2011-05-07