CalcHEP 2.3: MSSM, structure functions, event generation, batchs, and generation of matrix elements for other packages

By Alexander Pukhov. 2004

398 citations recorded by the source corpus.

CalcHEP is a package for computation of Feynman diagrams and integration over multi-particle phase space. The main idea prescribed into CalcHEP is to make available passing on from Lagrangians to the final distributions effectively with a high level of automation. This article presents new options of CalcHEP available in version 2.3. They are a) MSSM model with different SUGRA scenarios, b) interface with PDFLIB and implementation of new MRST/CTEQ structure functions, c) realization of approach to structure functions for models with diagonal CKM, d) generation of events and interface with PYTHIA, e) calculations in non-interactive (batch) regime, f)generation of code of different matrix elements for other programs, g) many new interface facilities.

Subfields: Computer Networks and Communications, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/65c6adb10a23ff5f850fe9905e76a3dd44851472

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Citations in the corpus

FeynRules 2.0 - A complete toolbox for tree-level phenomenology (2013, background): “A summary of information for the index can be found in Table 2.”
MadGraph/MadEvent v4: The New Web Generation (2007, methodology): “At the matrix element level, these include the development of general purpose event generators, such as MadGraph [1] and MadEvent [2], CompHEP/CalcHEP [3, 4 ], SHERPA [5] and WHIZARD [6], high efficiency multiparton generators which go beyond the usual Feynman diagram techniques, such as ALPGEN [7]”
Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level (2010, background): “Leading order (LO) processes are the core of well-established multi-purpose event generators like MadGraph MadEvent [1–3], CompHEP-CalcHEP [4, 5], SHERPA [6, 7], WHIZARD [8], ALPGEN [9], and HELAC [10,11], whereas a variety of processes computed at NLO are currently implemented in programs like MCFM”
A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector (2012, methodology): “First, using the model [547] implemented in CalcHep [548], samples were generated for the processes g u ! e+e u and g ū ! e+e ū, keeping only diagrams involving the exchange of a scalar LQ of charge 1/3, isospin 0 and fermion number 2.”
Collider limits on new physics within micrOMEGAs4.3 (2016, positive): “Furthermore, through its link to CalcHEP [13, 14], observables at colliders can be computed.”
SARAH 4: A tool for (not only SUSY) model builders (2013, methodology): “For SUSY and non-SUSY models the calculated vertices can be used to write model ﬁles for CalcHep / CompHep [20, 21], FeynArts / FormCalc [22, 23], WHIZARD / O’Mega [24, 25] as well as in the UFO format [26] which can be handled for instance by MadGraph 5 [27], GoSam [28] and Herwig++ [29–31].”
MadGraph 5: going beyond (2011, methodology): “for the LHC has spurred an intense activity in recent years, that has resulted in several important advances in the ﬁeld. General purpose matrix-element based event generators, such as CompHEP/CalcHEP[1, 2, 3], MadGraph/MadEvent[4, 5, 6], Sherpa[7] and Whizard[8] have been available for several year”
A comprehensive approach to new physics simulations (2009, methodology): “nt lists (M$ExtParams, M$IntParams, M$Masses) are included, containing the values of the parameters of the model, as well as the masses and widths of all the particles. 4.2 CalcHep/CompHep The CalcHep[4, 6] and CompHep[4, 5] software automate the tree-level Feynman diagram calculation and production”
MadAnalysis 5, a user-friendly framework for collider phenomenology (2012, background): “l. This has triggered, during the last twenty years, a lot of eﬀorts dedicated to the development of multi-purpose matrix-element based event generators such as Alpgen [1], Comix [2], CompHep/CalcHep [3, 4, 5], Helac[6], MadGraph/MadEvent[7, 8, 9, 10, 11], Sherpa[12, 13] and Whizard [14, 15]. As a r”
Exploring New Models in All Detail with SARAH (2015, methodology): “This information is exported to the CalcHep/CompHep and UFO model files.”
CalcHEP 3.4 for collider physics within and beyond the Standard Model (2012, methodology): “CalcHEP comes preinstalledwith several parton distribution function sets These sets and tools for updating themhave been described in [19].”