Speaker
Dr
Thomas Flacke
(Universitaet Wuerzburg, Germany)
Description
In models with universal extra dimensions, all Standard Model particles are promoted to five dimensional fields which extend into a flat extra dimension S^1/Z_2. The inclusion of extra dimensional fermion mass terms splits the mass of the Kaluza-Klein fermion modes from Kaluza-Klein masses of the gauge bosons and the Higgs which has important implications for the collider- and the dark matter phenomenology of these so-called split-UED models.
In this talk we point out, that generic choices for the five dimensional mass terms lead to flavor changing neutral currents already at tree level. We use the constraints on FCNCs in order to determine experimentally viable 5D fermion mass terms which in turn determine the fermion Kaluza-Klein spectrum.
We show that the absence of FCNCs implies that the Kaluza-Klein mode masses of quarks of different flavors must be highly degenerate.
Primary author
Dr
Thomas Flacke
(Universitaet Wuerzburg, Germany)
