CP Asymmetries in B_s Decays and Spontaneous CP violation

Details CP Asymmetries in B_s Decays and Spontaneous CP violation CP Asymmetries in B_s Decays and Spontaneous CP violation

1999-01-11

arxiv.org/abs/hep-ph/9901265v2

Phys.Rev.D60:016003,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

References and discussion added, version to be published in PRD

Scientific paper

10.1103/PhysRevD.60.016003

We study 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 penguin 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. Detection of the new physics can be done by measuring non-zero 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 $\gamma$ in electroweak penguin dominated processes $B_s^0\to\rho^0\eta^{(')}, \rho^0\phi$ can largely be affected by the new physics.

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