Tutorials

This repository contains a set of working standalone examples illustrating the use of MoMEMta.

Requirements

• ROOT >= 6.02
• MoMEMta >= 0.1.0 (and its requirements, such as LHAPDF, Boost)
• A C++-11 capable compiler

Install

• Clone the repository or download and extract the archive.
• Execute the following in the Tutorials folder:

mkdir build
cd build
cmake ..
make -j 4

The following options are available when configuring the the build (when running cmake ..):

• -DMOMEMTA_INCLUDE_DIR=(path): Path to the include directory of your installation of MoMEMta. Use this if your version of MoMEMta was installed locally and not in your system directories
• -DMOMEMTA_LIBRARY=(path): Path to the shared library libmomemta.so of your installation of MoMEMta. Use this if your version of MoMEMta was installed locally and not in your system directories
• -DBOOST_ROOT=(path): Use specific Boost library installation

Run

You now have a set of executables located in sub-folders of the build directory. However, these cannot be executed yet: you need to build the matrix elements yourself, just like when you export them using MoMEMta-MaGMEE and copy them to your project's directory.

For instance, to build the TTbar_FullyLeptonic example's matrix element, do:

cd ../TTbar_FullyLeptonic/MatrixElement/
mkdir build
cd build
cmake .. # If you had to specify the `MOMEMTA_INCLUDE_DIR´ when building the tutorials, you'll have to do it here as well
make -j 4

This creates a shared library that can loaded dynamically by MoMEMta. The example can now be executed:

cd ../../../build/
TTbar_FullyLeptonic/TTbar_FullyLeptonic.exe