PSGen, a generator of phase space parameterizations for the multichannel Monte Carlo integration
نویسندگان
چکیده
PSGen is a new general purpose Fortran program which has been written to facilitate the Monte Carlo phase space integration of S matrix element any 2→n scattering process, with n=2,...,9, provided by user. The in 90/95. It uses very fast algorithm that automatically generates calls subroutines containing different parameterizations considered class processes. take into account mappings poles due Feynman propagators unstable heavy particles decaying 2 or 3 on shell final state according predefined patterns, possible single double t-channel and peaks one photon gluon radiation. individual are organized multichannel kinematics subroutine can be easily called while computing integral as function generated particle four momenta, either leading higher orders perturbation series. momenta used quadruple precision version, if necessary. Program Title: CPC Library link files: https://doi.org/10.17632/y7nprysy8g.1 Developer's repository link: https://www.kk.us.edu.pl/psgen.html Licensing provisions: GPLv3 Programming language: 90/95 Nature problem: Automatic generation routines allow for user's 2→n, process. defined orders. Solution method: A handwritten which, among others, moved directory, where they combined properly normalized parameterization. corresponding self-consistent readily calculates supplemented own made subroutines.
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ژورنال
عنوان ژورنال: Computer Physics Communications
سال: 2023
ISSN: ['1879-2944', '0010-4655']
DOI: https://doi.org/10.1016/j.cpc.2023.108870