Simulation of tail distributions due to random processes and beam-beam interaction in KEKB

A simulation that uses a new technique to obtain tail distributions in electron-positron storage rings is applied to KEKB. This program makes it possible to investigate tail distribution in simple and fast simulation technique and shows good agreement with solvable cases. The simulation now includes exact solution for the six dimensional beam-beam interaction and several rare random processes. An estimate of the lifetimes for KEKB is also presented.