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########################################################################
# WHIZARD: Monte Carlo generator generator
#
# (C) 1999-2011 by
# Wolfgang Kilian <kilian@hep.physik.uni-siegen.de>
# Thorsten Ohl <ohl@physik.uni-wuerzburg.de>
# Juergen Reuter <juergen.reuter@desy.de>
# Christian Speckner <christian.speckner@physik.uni-freiburg.de>
#
# WHIZARD is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# WHIZARD is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
########################################################################
WHIZARD is a program system designed for the efficient calculation
of multi-particle scattering cross sections and simulated event
samples. The events can be written to file in various formats
(including STDHEP and ASCII) or analyzed directly on the parton level
using a built-in LaTeX-compatible graphics package.
Tree-level matrix elements are generated automatically for arbitrary
partonic processes by calling (in principle) external programs
(O'Mega per default, while Madgraph and CompHep are available on
demand), that are however shipped with the main distribution. In
particular, the MSSM is supported with an interface to
the SUSY Les Houches Accord input format.
Matrix elements obtained by alternative methods (e.g.,
including loop corrections) may be interfaced as well. Using an
adaptive multi-channel method for phase space integration, the program is
able to calculate numerically stable signal and background cross
sections and generate unweighted event samples with reasonable
efficiency for processes with up to six and more
final-state particles. Polarization is treated exactly for both the
initial and final states. Quark or lepton flavors can be
summed over automatically where needed.
For Linear Collider physics,
beamstrahlung (CIRCE), Compton and ISR spectra are included for
electrons and photons. Alternatively, beam-crossing events can be
read directly from file. For hadron collider physics, the standard LHAPDF
(or alternatively for backwards compatibility reasons) the PDF library
(PDFLIB) can be linked. For fragmenting and hadronizing the final state,
a PYTHIA and HERWIG interface is provided which follows the Les Houches
Accord.
The WHIZARD manual can be found in the subdirectory 'doc'. The manual
describes the installation and usage of WHIZARD.

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