1304.3905 (Yukihiro Fujimoto et al.)

CP phase from Higgs's boundary condition    [PDF]

Yukihiro Fujimoto, Kenji Nishiwaki, Makoto Sakamoto

We propose a new mechanism to generate a CP phase originating from a non-trivial Higgs vacuum expectation value in an extra dimension. A twisted boundary condition for the Higgs doublet can produce an extra dimensional coordinate-dependent vacuum expectation value containing a CP phase degree of freedom. With this mechanism, we construct a phenomenological model on S^{1} which can simultaneously and naturally explain the origins of the fermion generations, the quark mass hierarchy and the structure of the Cabibbo-Kobayashi-Maskawa matrix with the CP phase.

View original: http://arxiv.org/abs/1304.3905