Signals from extra dimensions decoupled from the compactification scale

Abstract

Multilocalization provides a simple way of decoupling the mass scale of new\nphysics from the compactification scale of extra dimensions. It naturally\nappears, for example, when localization of fermion zero modes is used to\nexplain the observed fermion spectrum, leaving low energy remnants of the\ngeometrical origin of the fermion mass hierarchy. We study the phenomenology of\nthe simplest five dimensional model with order one Yukawa couplings reproducing\nthe standard fermion masses and mixing angles and with a light Kaluza-Klein\nquark Q_{2/3} saturating experimental limits on V_{tb} and m_Q, and then with\nobservable new effects at Tevatron.\n