D~0 mixing at the BaBar experiment

摘要

After a brief introduction on the mixing of neutral charmed mesons,we discuss the time-dependent Dalitz plot analysis of D~0→ K_S~0h~+ h~- (h = π, K) with the BaBar data sample. This measurement is directly sensitive to x_D and y_D, the mixing parameters that describe, respectively, mass and width differences between the mass eigenstates of the neutral D system.