Proper-time resolution function for measurement of time evolution of B mesons at the KEK B-Factory

The proper-time resolution function for the measurement of the time evolution of B mesons with the Belle detector at KEKB is studied in detail. The obtained resolution function is applied to the measurement of B meson lifetimes, the B-0(B) over bar (0) oscillation frequency and time-dependent CP asymmetries. (C) 2004 Elsevier B.V. All rights reserved.