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.
The standard reference for the use of the code is: J. Alwall et al, "The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations", arXiv:1405.0301 [hep-ph]. A more complete list of references can be found here: http://
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:mg5amcnlo
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 code Code
- Version control system:
- Programming languages:
All FAQs FAQs for MadGraph5_aMC@NLO
- what is "WARNING: Failed to update dependent parameter"
- Different syntax for the same diagram leads to different cross-sections: Why?
- Can I just calculate the amplitudes for a (sub)process and check them point-by-point in phase space points (in fortran/C++/Python)
- How to make a parameter scan.
- aMCatNLOError : Poles do not cancel, run cannot continue
All bugs Latest bugs reported
Bug #1667211: Problem with decay via dipole operator
Reported on 2017-02-23
Bug #1666730: lhapdf6 linking fails with mg5 2.5.2
Reported on 2017-02-22
Bug #1666517: HepMC Installation fails
Reported on 2017-02-21
Bug #1666079: HepMC Installation fails
Reported on 2017-02-19
Bug #1665232: MadLoopInitializer does not respect single core runs; crashes
Reported on 2017-02-16