Speaker
Description
For simulations of radiative corrections in decays of particles and resonances, questions of systematic ambiguities become more and more demanding with improving precision. Photos Monte Carlo has two modes of operation. The one based on exclusive exponentiation, of a non-Markovian algorithm, starting from a Poissonian distribution of independent photons, is expected to provide the best physical precision. It is free of so called minimal generated photon energy bias. The same emission kernel can be used in mode where maximum photon multiplicity is fixed to 1 or 2. This operation mode is prepared for tests and comparisons with fixed order matrix element calculations. It is indispensable in ambiguities evaluation. In both cases algorithm phase space constraints are introduced iteratively.
