In the past year the BaBar collaboration has presented very exciting first results. Two particularly interesting results are the measurement of the mixing parameter , and the CP asymmetry
A crucial ingredient in both these analyses, and in fact the main motivation for building an asymmetric collider, is the ability to measure the time structure of B-Meson decays.
This talk will focus on the experimental issues associated with understanding that time structure. Specific attention will be paid to: 1) the techniques used to measure the proper time difference between the B-Meson decays; and 2) the technique used to distinguish from decays. Finally, potential systematic bias from these techniques will be discussed and quantified.