Selection of Data

In this chapter the event selection procedures are described. The selection is designed to enhance the signal over background processes. The background processes fall into two categories, (i) the irreducible background from events leading to the same final state as the signal. These were described in the last chapter. (ii) background processes which lead to a similar, but not identical final state which can be mis-identified as signal events. These processes are described below. Also described in this chapter are the Monte Carlo generators used in the analysis.