MadGraph/MadEvent v4: The New Web Generation

By Johan Alwall, P. Demin, S. Visscher, R. Frederix, M. Herquet, Fabio Maltoni, Tilman Plehn, D. Rainwater, Tim Stelzer. 2007

1,256 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4b98e634b4e94a172c23f6f6c55034f1e014f4cc

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In Nuclear and High Energy Physics

Citations in the corpus

NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders (2012, methodology): “with Madgraph [88] and, alternatively, using the Weyl–van-der-Waerden formalism of Ref.”
UFO - The Universal FeynRules Output (2011, background): “…tree-level matrix-element generators, such as Alpgen [1], Comix [2], CompHep / CalcHep [3,4,5], Helac [6], Herwig [7,8], MadGraph/MadEvent [9,10,11,12,13], Sherpa [14,15], or Whizard [16,17], describing the hard scattering processes where the Beyond the Standard Model (BSM) physics is expected…”
NLO single-top production matched with shower in POWHEG: s- and t-channel contributions (2009, methodology): “testing, where possible, our implementation against MadGraph subroutines [40].”
FeynRules - Feynman rules made easy (2008, background): “A few of these are CalcHEP/CompHEP[1,2,3], FeynArts/FormCalc[4,5,6,7,8,9,10,11], Herwig[12,13,14,15], MadGraph/MadEvent[16,17], Sherpa[18], and Omega/ Whizard [19,20].”
Automation of one-loop QCD computations (2011, methodology): “The current version of MadLoop (and of MadFKS) uses MadGraph v4 [32].”
Jet shapes and jet algorithms in SCET (2010, methodology): “clusive process, threejet events in the Mercedes-Benz conguration, we implement cuts on the simulated events to obtain a sample that matches onto this conguration. We use MadGraph/MadEvent v.4.4.21 [96] to generate parton-level e+e !qqg events at a center-of-mass energy Q= 500 GeV, with cuts imposed”
QCD Radiation in the Production of Heavy Colored Particles at the LHC (2008, methodology): “In this section we compare the QCD radiation pattern as obtained from a parton shower alone (Pythia) and from a matrix element plus parton shower (MadGraph/MadEvent + Pythia) approach, for some key processes with heavy colored final states.”
Discovering the top partners at the LHC using same-sign dilepton final states (2008, methodology): “Moreover, 7 Due to CPU limitations, in the case of the WWW + jets and W±W± + jets backgrounds we were not able to generate with MadGraph/MadEvent all the partonic multiplicities required for a 5 jets analysis.”