PROGRAM FOR COMPUTER-SIMULATION ON PHOTOPRODUCTION OF MESONS DECAYINGINTO 2 PHOTONS

Experiments carried out using multi-detector arrays and wide-band tagg ers in general lead to large amounts of data which can only be meaning fully analysed if the experiment is accompanied by detailed computer s imulations, being at least ten times as precise as the result of the e xperiment. For this reason we have developed a computer code for the s imulation of photoproduction of mesons decaying into two photons which avoids Monte-Carlo procedures, and have applied this code to studies of possibilities to separate events of proton Compton scattering from events of the p(gamma, pi(0))p reaction. Requiring only a very moderat e computer time, our new code leads to predictions of photon spectra a nd angular distributions of recoil protons without the fluctuations ty pical for a Monte Carlo result.