Extracting information on CKM phases , electro - weak penguins and new physics from B →

We derive constraints for B → V V modes (V = vector meson) that allow a quantitative assessment of the contributions from electroweak penguins (EWP) and/or new physics. Interplay of direct CP with oscillation studies then leads to the extraction of the angles α and γ, using B → Kω(ρ) andB → ρω(φ) respectively, if by using our constraint equations it can be experimentally demonstrated that color-suppressed EWP are small. Recent evidence from CLEO [1] indicates that the long sought after penguin decays occur at the appreciable rate of about 10. In both b → s and b → d transitions interference between the tree and the strong penguin is expected to lead to CP violation effects. Two of the most important applications of these rare hadronic decays are: 1) determination of the phases of the unitarity triangle [2], and 2) test the presence of non-standard physics. In this paper we will show that among such B-decays those involving two vector mesons in the final state can be very useful for attaining these goals. Following Gronau and London [3], a general strategy for extracting CKM angles from modes that result from the interference between tree and penguin is to exploit the fact that the strong penguin and the tree have different