Dynamical CP Violation and Flavour-Changing Processes

Details Dynamical CP Violation and Flavour-Changing Processes Dynamical CP Violation and Flavour-Changing Processes

2001-01-29

arxiv.org/abs/hep-ph/0101315v1

Nucl.Phys. B607 (2001) 268-292

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 25 pages, 4 figures

Scientific paper

10.1016/S0550-3213(01)00238-3

We investigate the phenomenological constraints on a model where, besides the standard model Higgs sector, there is an effective new strong interaction acting on the third generation of quarks and characterized by a $\theta$-like term. This $\theta$ term induces electroweak symmetry breaking and leads to dynamical spontaneous CP violation. We show that the constraints coming from K physics and the electric dipole moment of the neutron impose that the new physics scale should be of the order of 35 TeV. Contrary to naive expectations, the predictions of the model for B physics are very close to the standard model ones. The main differences appear in processes involving the up quarks such as $D^0-\bar{D}^0$ mixing and in the electric dipole moment of the neutron, which should be close to the experimental limit. Possible deviations from the standard model predictions for CP asymmetries in B decays are also considered.

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