MadGraph 5: going beyond

By Johan Alwall, M. Herquet, Fabio Maltoni, Olivier Mattelaer, Tim Stelzer. 2011

3,151 citations recorded by the source corpus.

MadGraph 5 is the new version of the MadGraph matrix element generator, written in the Python programming language. It implements a number of new, efficient algorithms that provide improved performance and functionality in all aspects of the program. It features a new user interface, several new output formats including C++ process libraries for Pythia 8, and full compatibility with FeynRules for new physics models implementation, allowing for event generation for any model that can be written in the form of a Lagrangian. MadGraph 5 builds on the same philosophy as the previous versions, and its design allows it to be used as a collaborative platform where theoretical, phenomenological and simulation projects can be developed and then distributed to the high-energy community. We describe the ideas and the most important developments of the code and illustrate its capabilities through a few simple phenomenological examples.

Subfields: Artificial Intelligence, Computational Theory and Mathematics, Information Systems and Management

View Paper: https://www.semanticscholar.org/paper/36717e4c5c4a55408b0f768fa31838d2a5c65826

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In Artificial Intelligence

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3. Gudrun Heinrich
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5. Abdelhak Djouadi
6. Ansgar Denner
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In Computational Theory and Mathematics

1. Cms Collaboration
2. Gudrun Heinrich
3. Atlas Collaboration
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In Information Systems and Management

1. Cms Collaboration
2. Atlas Collaboration
3. Florian Staub
4. Olivier Mattelaer
5. R. Frederix
6. Benjamin Fuks
7. Lian-tao Wang
8. Neil D. Christensen

Citations in the corpus

• Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV (2012, methodology): “Backgrounds tt, W+jets, Z+jets are generated with MADGRAPH 5 [25, 26] interfaced with PYTHIA 6.”
• Flavor violating Higgs decays (2012, background): “6 [57] for parton level event generation, Pythia 6.”
• Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report (2014, methodology): “The PowhegBox generator [26] is used to produce the inclusive NLO samples B0 [363], B1 and B2 [364], while additional tree-level inputs are taken from MadGraph/MadEvent [355,365].”
• Fermion portal dark matter (2013, methodology): “In order to estimate the current reach of monojet searches, we generate events for all tree-level diagrams with one quark plus dark matter particles in the final state using MadGraph [68] with the models defined in FeynRules [69].”
• Discovering uncolored naturalness in exotic Higgs decays (2015, background): “Matched samples with 0 or 1 extra jet are generated in Madgraph 5 and showered in Pythia 6 [77, 78].”
• Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions (2014, methodology): “1 [69] generator is used for Z+jets, W+jets, tt and di-boson production, and POWHEG 1.”
• Top-pair production and decay at NLO matched with parton showers (2014, methodology): “The matrix elements were obtained with the MadGraph5 program [36].”
• Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production (2014, methodology): “The parton level events for the Pythia merging in the 0-jet bin come from MadGraph5 [101], in the 1-jet bin we use MCFM [102, 103], and in the 2-jet bin we use VBFNLO [104].”
• Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “Event samples at 13 TeV have been generated using MG5_aMC@NLO [88, 877], interfaced to the general-purpose event generator HERWIG 7 [584, 700, 878–880] for the parton shower and nonperturbative effects, such as hadronization and multiple-parton interactions.”
• Measurement of the single-top-quark t-channel cross section in pp collisions at $ \sqrt{s}=7 $ TeV (2012, methodology): “The tree-level matrixelement generator MadGraph [16] interfaced to pythia is used for top-quark pair (tt) production and for inclusive single boson production V + X, where V = W or Z, and X can indicate one or more light or heavy partons.”
• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012, neutral): “To generate parton showers and their hadroni-sation, and to simulate the underlying event [66–68], PYTHIA6 [69] (for 7 TeV samples and 8 TeV samples produced with MadGraph [70, 71] or AcerMC) or PYTHIA8 [72] (for other 8 TeV samples) are used.”
• Vector-like leptons: Higgs decays and collider phenomenology (2013, methodology): “To estimate the sensitivity of the CMS multilepton search we used Madgraph 5 [42] to simulate the L1L̄1 production followed by decay L1 → V l where V = W,Z and l is a charged or neutral SM lepton.”
• Search for production of vector-like quark pairs and of four top quarks in the lepton-plus-jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector (2015, methodology): “33 [77] LO generator and the MSTW 2008 PDF set, interfaced to Pythia 8.”
• Soft triple-real radiation for Higgs production at N3LO (2013, result): “We compare our results with a set of numeric cross-sections for different phase-space points obtained with MadGraph [86] and find perfect agreement.”