madgrapy 0.0.1

A Python interface to run MadGraph

MadPy

A simple Python interface to run MadGraph

How to use this module

Requirements:

• Python 3.6+
• MadGraph 3.6+
• AND Python 2.7 (for MadDM compatibility)
• AND MadGraph 2.9 (for MadDM compatibility)
• ghostscript

sudo apt-get install ghostscript

(Optional) Create a virtual env

python3 -m venv my_virtualenv
source my_virtualenv/bin/activate

Install with pip

pip install madpy

Install madgraph from its GitHub

git clone https://github.com/mg5amcnlo/mg5amcnlo.git
cd mg5amcnlo
git switch 3.x

rm -rf bin/*.py

Download MadGraph 2.9.24 (to run MadDM v3.2, to be updated soon)

wget https://github.com/mg5amcnlo/mg5amcnlo/archive/refs/tags/v2.9.24.tar.gz
tar -xvf v2.9.24.tar.gz
cd mg5amcnlo-2.9.24

Run mg5 with

./bin/mg5_aMC

Install MadDM v3.2

In order to install MadDM v3.2

First, run MG5 with and then the following command

./bin/mg5_aMC
install maddm
install pythia

!!! important "Python3 compatibility" Up to now, MadDM doesn't have compatibility with Python3, so you need to have Python2.7 installed.

And run maddm with:

python2.7 bin/maddm.py

After that, you can follow the tutorial to learn MadDM basic features

Run Simplified DM model scan

MadDM> import model eDMsimp_s_spin0
MadDM> define darkmatter xd
MadDM> generate direct
MadDM> output SCAN_example
MadDM> launch SCAN_example

TODO:

• Update this guide when MadDM v3.3 is released.

[Experimental] Run MadDM beta with Python3 compatibility

Clone the MadDM repository

git clone https://github.com/maddmhep/maddm.git
cd maddm
git switch rc/3.3
cp -R . ../mg5amcnlo-2.9.24/PLUGIN/maddm
cp -R maddm ../mg5amcnlo-2.9.24/bin/maddm.py

Install LHAPDF

wget https://lhapdf.hepforge.org/downloads/?f=LHAPDF-6.X.Y.tar.gz -O LHAPDF-6.X.Y.tar.gz
# ^ or use a web browser to download, which will get the filename correct
tar xf LHAPDF-6.X.Y.tar.gz
cd LHAPDF-6.X.Y
## Changes 
export PYTHON_VERSION=3.10
export PYTHON=/opt/apps/python/3.10/bin/python3.10
./configure  --prefix=/opt/apps/python/3.10
make
make install

Troubleshooting

find /opt/apps/python/3.10 -name "libpython3.10.so.1.0" export LD_LIBRARY_PATH=/opt/apps/python/3.10/lib:$LD_LIBRARY_PATH echo "/opt/apps/python/3.10/lib" | sudo tee /etc/ld.so.conf.d/python310.conf sudo ldconfig

file /opt/modulefiles/lhapdf/6.5.5

#%Module1.0
prepend-path PATH /opt/apps/lhapdf/bin
prepend-path LD_LIBRARY_PATH /opt/apps/lhapdf/lib
prepend-path PYTHONPATH /opt/apps/lhapdf/lib/python3.10/site-packages

MadGraph FAQ

• https://answers.launchpad.net/mg5amcnlo/+faq/2735

• https://answers.launchpad.net/mg5amcnlo/+faq/2186