Spontaneous CP Violating Phase as The CKM Matrix Phase

Details Spontaneous CP Violating Phase as The CKM Matrix Phase Spontaneous CP Violating Phase as The CKM Matrix Phase

2007-05-03

arxiv.org/abs/0705.0399v2

Eur.Phys.J.C53:607-614,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, RevTex. Several typos corrected, and one reference added

Scientific paper

10.1140/epjc/s10052-007-0509-y

We propose that the CP violating phase in the CKM mixing matrix is identical to the CP phases responsible for the spontaneous CP violation in the Higgs potential. A specific multi-Higgs model with Peccei-Quinn (PQ) symmetry is constructed to realize this idea. The CP violating phase does not vanish when all Higgs masses become large. There are flavor changing neutral current (FCNC) interactions mediated by neutral Higgs bosons at the tree level. However, unlike general multi-Higgs models, the FCNC Yukawa couplings are fixed in terms of the quark masses and CKM mixing angles. Implications for meson-anti-meson mixing, including recent data on $D-\bar D$ mixing, and neutron electric dipole moment (EDM) are studied. We find that the neutral Higgs boson masses can be at the order of one hundred GeV. The neutron EDM can be close to the present experimental upper bound.

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