Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-06
Adv.Ser.Direct.High Energy Phys. 15 (1998) 755-794
Physics
High Energy Physics
High Energy Physics - Phenomenology
50 pages, harvmac, 1 figure. To appear in the Review Volume "Heavy Flavours II", eds. A.J. Buras and M. Lindner, Advanced Seri
Scientific paper
We review CP violation in various extensions of the electroweak sector of the Standard Model. A particular emphasis is put on supersymmetric models. We describe the two CP problems of supersymmetry, concerning $d_N$ and $\epsilon_K$. We critically review the various mechanisms that have been suggested to solve these problems: exact universality, approximate CP symmetry, alignment, approximate universality and heavy squarks. We explain how future measurements of CP violation will test these mechanisms. We describe extensions of the quark sector and their implications on CP asymmetries in neutral B decays, on the $K_L \to \pi \nu \bar\nu$ decay and on $\Delta\Gamma(B_s)$. We discuss CP violation in charged scalar exchange in models with natural flavor conservation and explain how transverse lepton polarization in meson decays can probe such models. CP violation in neutral scalar exchange arises in models of horizontal symmetries and may be manifest in heavy quark (b and t) physics. We describe the implications of Left-Right Symmetric models on $d_N$, $\epsilon_K$, $\epsilon'/\epsilon$ and CP asymmetries in B decays. Finally, we briefly discuss the potential of future measurements of CP violation to discover New Physics.
Grossman Yuval
Nir Yosef
Rattazzi Riccardo
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