Measurement of Strong-Phase Difference Between D⁰ and^D¯0→KS/L0^Ï€+^Ï€- and the Role of Model-Dependent Inputs at BESIII

The strong-phase difference Δ δD − between D0 and D¯0 decays to a common final state − is a crucial input to the measurement of the weak phase γ of the CKM (b- d) unitarity triangle extracted from B-→ DK- decay, where D is a D0 or D¯0 meson decaying to the same final state.With the largest quantum-correlated dataset of D0D¯0 pairs produced at the ψ(3770 ) resonance, corresponding to an integrated luminosity of 2.93fb-1, BESIII will reduce the systematic uncertainty on γ coming from Δ δD.Model-independent, as well as model-dependent studies, are required to best constrain the strong-phase difference parameters.This paper reviews the strong-phase measurements reported by BESIII and presents simulation studies of D0→KS/L0π+π- amplitude models with the BESIII D0D¯0 dataset.