Abstract:
Previous studies have shown how the three generations of the Standard Model fermions can arise from a single generation in more than four dimensions, and how off-diagonal neutral couplings arise for gauge-boson Kaluza–Klein recurrences. These couplings conserve family number in the leading approximation. While an existing example, built on a spherical geometry, suggests a high compactification scale, we conjecture that the overall structure is generic, and work out possible signatures at colliders, compatible with rare decays data.
Citation:
J. M. Frère, M. V. Libanov, E. Ya. Nugaev, S. V. Troitsky, “Searching for family-number conserving neutral gauge bosons from extra dimensions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 79:12 (2004), 734–737; JETP Letters, 79:12 (2004), 598–601