Z-mediated flavor-changing neutral currents and their implications for CP asymmetries in B0 decays.
- Author(s): Nir, Y;
- Silverman, D
- et al.
Published Web Locationhttps://doi.org/10.1103/physrevd.42.1477
In models where the quark sector is extended in a nonsequential way, there are Z-mediated flavor-changing neutral currents at the tree level. These may dominate mixing in neutral-B systems. Unitarity of the three-generation Cabibbo-Kobayashi-Maskawa matrix is violated, and new phases take part in quark mixing. All these effects modify significantly the predictions for CP asymmetries in B0 decays. The various aspects of new physics can be probed separately by testing specific relations among these CP asymmetries. © 1990 The American Physical Society.