FASTERD: A Monte Carlo event generator for the study of final state radiation in the process image at DAΦNE Original Research Article

FASTERD is a Monte Carlo event generator to study the final state radiation both in the image and image processes in the energy region of the ϕ-factory DAΦNE. Differential spectra that include both initial and final state radiation and the interference between them are produced. Three different mechanisms for the ππγ final state are considered: Bremsstrahlung process (both in the framework of sQED and Resonance Perturbation Theory), the ϕ direct decay (image) and the double resonance mechanism (as image and image). Additional models can be incorporated as well.