MONTE-CARLO EXPONENTIATION AND FINAL-STATE RADIATIVE-CORRECTIONS

It is argued that final-state radiative corrections to many LEP processes, although themselves numerically small under many experimental conditions, are essential ingredients in any Monte Carlo treatment that aims at a sufficiently accurate description of angular distributions as well as total cross sections. A class of Monte Carlo algorithms is presented which allow for full-fledged exponentiation including the emission of arbitrarily large numbers of bremsstrahlung photons. Special attention is given to the convergence properties of the algorithms for large photon multiplicities.