Standard Model in adS slice with UV-localized Higgs field

Details Standard Model in adS slice with UV-localized Higgs field Standard Model in adS slice with UV-localized Higgs field

2010-03-29

arxiv.org/abs/1003.5483v2

Int.J.Mod.Phys.A25:3641-3660,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 3 figures, Journal version

Scientific paper

10.1142/S0217751X10049797

We discuss five-dimensional Standard Model in a slice of adS space-time with the Higgs field residing near or on the UV brane. Allowing fermion fields to propagate in the bulk, we obtain the hierarchy of their masses and quark mixings without introducing large or small Yukawa couplings. However, the interaction of fermions with the Higgs and gauge boson KK excitations gives rise to FCNC with no built-in suppression mechanism. This strongly constrains the scale of KK masses. We also discuss neutrino mass generation via KK excitations of the Higgs field. We find that this mechanism is subdominant in the scenarios of spontaneous symmetry breaking we consider.

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