title: Verifiable model of neutrino masses from large extra dimensions
abstract: We propose a new scenario of neutrino masses with a Higgs triplet (xi(++),xi(+),xi(0)) in a theory of large extra dimensions. Lepton number violation in a distant brane acts as the source of a very small trilinear coupling of xi to the standard Higgs doublet in our brane. Small realistic Majorana neutrino masses are naturally obtained with the fundamental scale M(*) approximately O(1) TeV, foretelling the possible discovery of xi (m(xi) less, similarM(*)) at future colliders. Decays of xi(++) into same-sign dileptons are fixed by the neutrino mass matrix. Observation of &mgr;-e conversion in nuclei is predicted.
authors.affiliation: Department of Physics, University of California, Riverside, California 92521, USA.
authors.initials: E
authors.lastname: Ma
authors.initials: M
authors.lastname: Raidal
authors.initials: U
authors.lastname: Sarkar