CP asymmetries in B-s decays and spontaneous CP violation - art. no. 016003

We study the possible effects of new physics in CP asymmetries in two-body B-s decays in left-right models with spontaneous CP violation. Considering the contributions of new CP phases to the B-s mixing as well as to the peng uin-dominated decay amplitudes we show that, with the present constraints, large deviations from the standard model predictions in CP asymmetries are allowed in both cases. The detection of new physics can be achieved by meas uring nonzero asymmetries which are predicted to vanish in the standard mod el or by comparing two measurements which an predicted to be equal in the s tandard model. In particular, we show that the measurement of the CKM angle gamma in the electroweak penguin-dominated processes B-s(0) --> rho(0) eta ((')), p(0)phi can largely be affected by the new physics. [S0556-2821 (99) 03513-4].