LanHEP software package

Overview

The LanHEP program for Feynman rules generation in momentum representation is presented. It reads the Lagrangian written in the compact form close to one used in publications. It means that Lagrangian terms can be written with summation over indices of broken symmetries and using special symbols for complicated expressions, such as covariant derivative and strength tensor for gauge fields. The output is Feynman rules in terms of physical fields and independent parameters. This output can be written in LaTeX format and in the form of CompHEP model files, which allows one to start calculations of processes in the new physical model. Although this job is rather straightforward and can be done manually, it requires careful calculations and in the modern theories with many particles and vertices can lead to errors and misprints. The program allows one to introduce into CompHEP new gauge theories as well as various anomalous terms.

Installation

To install LanHEP on your computer, you should get the archive file (see below) and unpack it. The archive contains the C source files. To create the executable file lhep , type 'make`. The archive also contains the directory mdl with startup file and examples for several physical models. Add the directory containing LanHEP to your PATH environment variable. Than LanHEP can be started from any other directory, it can find automatically files from the mdl directory.

Online Manual version 2.0

Sources

• LanHEP version 3.2.0 (updated on Sep 30, 2015) source gzipped tar archive. Note is published as arXiv:1412.5016 [physics.comp-ph]
• LanHEP version 3.1.9 (updated on Nov 16, 2014) source gzipped tar archive. MSSM in LHA-2 format with extensions (NMSSM, CPV, FV) is added, in the susyLHA subrirectory of the package. A bug in AddHernConj function is fixed. A bug with parameter statement with aliases is fixed.
• LanHEP version 3.1.8 (updated on July 21, 2013) source gzipped tar archive. UFO format for Standard Model is successfully tested + added Lorentz Levi-Civita tensor in FeynArts and UFO output.
• LanHEP version 3.1.7 (updated on June 10, 2013) source gzipped tar archive. Sign of 4-gluon vertex in FeynArts output is corrected. UFO output is improved, but it still needs testing.
• LanHEP version 3.1.5 (updated on November 27, 2011) source gzipped tar archive. UFO output (preliminary, not tested well) is implemented, use -ufo command line option.
• LanHEP version 3.1.4 (updated on June 12, 2010) source , gzipped tar archive. Tools for models with extra dimensions are implemeted. The note describing new features of this version is available at arXiv:1005.1909v1 [hep-ph]
• LanHEP version 3.0.4 (updated on April 26, 2009) source , gzipped tar archive. A bug in LaTeX output is fixed (wrong coefficient at L/R projector); classes for FeynArts output are implemeted.
• LanHEP version 3.0.0 (updated on May 06, 2008) source , gzipped tar archive. The manual for this version is published in arXiv:0805.0555v1 [hep-ph]

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• LanHEP version 2.5.0 (updated on Mar 31, 2008) source , gzipped tar archieve.
• LanHEP version 2.4.0 (updated on Mar 14, 2008) source , gzipped tar archieve.
• LanHEP version 2.3.0 (updated on Nov 23, 2007) source , gzipped tar archive, read the note here
• LanHEP version 2.2.0 (May 2007) source (gzipped tar archive)

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• LanHEP version 2.0.0 (updated on May 9, 1999) source (gzipped tar archive).
• LanHEP version 2.0.2 (updated on Dec 20, 1999) source (gzipped tar archive).
• LanHEP version 2.0.4 (updated on Sep 11, 2000) source (gzipped tar archive).
• LanHEP version 2.0.5 (updated on Aug 30, 2001) source (gzipped tar archive).
• LanHEP version 2.0.7 (updated on May 24, 2002) source (gzipped tar archive) - the command line option '-mOmega' is implemented to produce the model files for micrOmega package.

Manuals

• Manual for LanHEP version 1.0 (August 1996) --- gzipped PostScript file.
• Updates to the manual for LanHEP version 1.3 (January 1998) --- gzipped PostScript file.
• Updates to the manual for LanHEP version 2.0 (April 1999) --- gzipped PostScript file.
• The version 2.0 manual is published as hep-ph/0208011 .
• Online Manual for version 2.0
• Version 2.3 updates
• The version 3.0 manual is arXiv:0805.0555v1 [hep-ph]

Feynman rules obtained by means of LanHEP

• MSSM Lagrangian tables for CompHEP .
• Feynman rules for Two Higgs Doublet Model (gzipped PostScript file).

References and legal information

• References
• Licence