6533b822fe1ef96bd127d633

RESEARCH PRODUCT

CPasymmetries inBsdecays and spontaneousCPviolation

subject

description

We study the possible effects of new physics in $\mathrm{CP}$ asymmetries in two-body ${B}_{s}$ decays in left-right models with spontaneous $\mathrm{CP}$ violation. Considering the contributions of new $\mathrm{CP}$ phases to the ${B}_{s}$ mixing as well as to the penguin-dominated decay amplitudes we show that, with the present constraints, large deviations from the standard model predictions in $\mathrm{CP}$ asymmetries are allowed in both cases. The detection of new physics can be achieved by measuring nonzero asymmetries which are predicted to vanish in the standard model or by comparing two measurements which are predicted to be equal in the standard model. In particular, we show that the measurement of the CKM angle $\ensuremath{\gamma}$ in the electroweak penguin-dominated processes ${B}_{s}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}{\ensuremath{\eta}}^{{(}^{\ensuremath{'}})},{\ensuremath{\rho}}^{0}\ensuremath{\varphi}$ can largely be affected by the new physics.