* B oscillations B lifetime oscillations is a purely QM effect. It has the functional form of an exponential decay function modulated by oscillatory phases due to interference b/w heavy and light states (cos, sin, cosh and sinh functions related to the mass and decay width differences (Δm and ΔΓ) b/w the two eigenstates). _Questions_: *************** Detector effects :Qn: 1. How is the Gaussian used for smearing of proper time resolution derived? 2. Why is the proper time error PDF needed? Why is smearing of time resolution not enough? *************** END