pyjetThe interface between FastJet and NumPy
numpythiaThe interface between PYTHIA and NumPy
root pandasA Python module for conveniently loading/saving ROOT files as pandas DataFrames
particlePackage to deal with particles, the PDG particle data table, PDGIDs, etc.
decaylanguagePackage to parse decay files, describe and convert particle decays between digital representations.
pylheLightweight Python interface to read Les Houches Event (LHE) files
zfitModel manipulation and fitting library based on TensorFlow and optimised for simple and direct manipulation of probability density functions. Its main focus is on scalability, parallelisation and user friendly experience.