A scheme for fast exploratory simulation of azimuthal asymmetries in Drell–Yan experiments at intermediate energies: The DY_AB Monte Carlo event generator

In this note I report and discuss the physical scheme and the main approximations used by the event generator code DY_AB. This Monte Carlo code is aimed at preliminary simulation, during the stage of apparatus planning, of Drell–Yan events characterized by azimuthal asymmetries, in experiments with moderate center of mass energy s ⪡ 100 GeV .