ELECTROWEAK PENGUIN EFFECTS IN SOME B-S(0) 2-BODY DECAYS

Using the next-to-leading order low energy effective Hamiltonian for Delta B = 1 transitions, the effects of electroweak penguin operators in some two-body decay modes of B-s(0) meson are estimated in the Standard Model (SM). We find that in B-s(0) --> pi(+)K(-) and B-s(0) --> K+K- decay modes, the electroweak penguin effects are small, while in B-s(0) --> pi(0)((K) over bar(0)), phi (K) over bar->(0), phi phi, the electroweak penguin operators enhance or reduce the pure QCD penguin and tree level contributions by 20%-80% in decay width. We also present the results of CP asymmetries in these B-s(0) decay modes.