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# __ __ ___ __ __ __ GoSam #
# / _) / \ / __) ( ) ( \/ ) An Automated One-Loop #
# ( (/\( () )\__ \ /__\ ) ( Matrix Element Generator #
# \__/ \__/ (___/(_)(_)(_/\/\_) Version 2.x.x #
# #
# (c) The GoSam Collaboration 2011-2015 #
# #
# AUTHORS: #
# * Hans van Deurzen <hdeurzen@mpp.mpg.de> #
# * Nicolas Greiner <greiner@mpp.mpg.de> #
# * Gudrun Heinrich <gudrun@mpp.mpg.de> #
# * Gionata Luisoni <luisonig@mpp.mpg.de> #
# * Pierpaolo Mastrolia <Pierpaolo.Mastrolia@cern.ch> #
# * Giovanni Ossola <gossola@citytech.cuny.edu> #
# * Tiziano Peraro <peraro@mpp.mpg.de> #
# * Johannes Schlenk <jschlenk@mpp.mpg.de> #
# * Johann Felix von Soden-Fraunhofen <jfsoden@mpp.mpg.de> #
# * Francesco Tramontano <Francesco.Tramontano@cern.ch> #
# #
# FORMER AUTHORS: #
# * Gavin Cullen <gavin.cullen@desy.de> #
# * Edoardo Mirabella <mirabell@mpp.mpg.de> #
# * Joscha Reichel <joscha@mpp.mpg.de> #
# * Thomas Reiter <reiterth@mpp.mpg.de> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License either #
# version 3, or (at your option) any later version. #
# #
# Scientific publications prepared using the present version of #
# GoSam or any modified version of it or any code linking to GoSam #
# or parts of it should make a clear reference to the publication: #
# #
# G. Cullen et al., #
# ``GoSam-2.0: a tool for automated one-loop calculations #
# within the Standard Model and Beyond'', #
# Eur. Phys. J. C 74 (2014) 8, 3001 #
# [arXiv:1404.7096 [hep-ph]]. #
################################################################################
Synopsis
--------
GoSam is a general one-loop evaluator for matrix elements.
The program produces Fortran 90 code from a given process
description by evaluating Feynman diagrams and translating
the associated one-loop diagrams into code suitable for the
evaluation with Samurai, Golem95 and/or PJFry.
Download
--------
GoSam can be downloaded from:
http://projects.hepforge.org/gosam/
Installation
------------
If the user has super-user privileges:
sudo python setup.py install
If the user wants (or has to) maintain an alternative installation
path <XXXX> for the python modules:
python setup.py install --prefix=<XXXX>
The prefix option can also be set permanently in the user's pydistutils config file.
After successful installation the user should also update the environment variable
PATH=$PATH:<XXXX>/bin
For bourne shell compatible shells (bash, zsh, ...), this can be done by adding the
following lines to ~/.profile:
PATH="$PATH:<XXXX>/bin"
export PATH
For csh compatible shells (tcsh, ...), the following line need to be added to ~/.cshrc:
setenv PATH "$PATH:<XXXX>/bin"
To enable this change, you need to run "source ~/.profile" or
"source ~/.cshrc" and "rehash", or re-login.
For more details, please refer to the manual (doc/refman.pdf).

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