PHOTOS Monte Carlo and its theoretical accuracy

Details PHOTOS Monte Carlo and its theoretical accuracy PHOTOS Monte Carlo and its theoretical accuracy

2008-07-17

arxiv.org/abs/0807.2762v1

Nucl.Phys.Proc.Suppl.181-182:269-274,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented by Z. Was, April 08 2008, International Workshop on e+e- collisions from Phi to Psi

Scientific paper

10.1016/j.nuclphysbps.2008.09.04

Because of properties of QED, the bremsstrahlung corrections to decays of particles or resonances can be calculated, with a good precision, separately from other effects. Thanks to the widespread use of event records such calculations can be embodied into a separate module of Monte Carlo simulation chains, as used in High Energy Experiments of today. The PHOTOS Monte Carlo program is used for this purpose since nearly 20 years now. In the following talk let us review the main ideas and constraints which shaped the program version of today and enabled it widespread use. Finally, we will underline importance of aspects related to reliability of program results: event record contents and implementation of channel specific matrix elements.

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