On measuring CP violation in neutral B-meson decays at the Γ (4S) resonance

Abstract Within the standard model we carry out an analysis of CP -violating observables in neutral B -meson decays at the Γ (4S) resonance. Both time-dependent and time-integrated CP asymmetries are calculated, without special approximations, to meet various possible measurements at symmetric and asymmetric e + e − B factories. We show two ways to distinguish between direct and indirect CP -violating effects in the CP -eigenstate channels such as B d 0 B d 0 → π + π − and π 0 K S . Reliable knowledge of the Cabibbo-Kobayashi-Maskawa phase and angles can in principle be extracted from measurements of some non- CP -eigenstate channels, e.g. B d 0 B d 0 → D ± π ∓ and (−) D (∗)0 K S , even in the presence of significant final-state interactions.