DJpsiFDC is an event generator package for the process gg→J/ψJ/ψ. It generates events for primary leading-order 2→2 processes. The package could generate a LHE document and this document could easily be embedded into detector simulation software frameworks. The package is produced in Fortran codes.
@article{arxiv.1007.0617,
title = {DJpsiFDC: an event generator for the process $gg\to J/\psi J/\psi$ at LHC},
author = {Cong-Feng Qiao and Jian Wang and Yang-heng Zheng},
journal= {arXiv preprint arXiv:1007.0617},
year = {2011}
}