Effects of the space-like penguin diagrams on CP asymmetries in exclusive B decays

The space-like penguin contributions were ignored on little ground in many previous studies of nonleptonic B transitions and CP violation. Taking the penguin-dominated channels Bu− → K0π− and Bu− → K0K− for example, we illustrate the non-negligible effects of the space-like penguin diagrams on CP asymmetries. Some qualitative remarks are given on the gluonic penguin picture and direct CP violation in exclusive two-body decays of B mesons.