Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-06-05
Phys.Rev.Lett. 85 (2000) 3769-3772
Physics
High Energy Physics
High Energy Physics - Phenomenology
A comment on Tevatron reach and two references added. Discussion and conclusions unchanged
Scientific paper
10.1103/PhysRevLett.85.3769
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 \underline{naturally} obtained with the fundamental scale $M_* \sim {\cal O}(1)$ TeV, foretelling the possible discovery of $\xi$ $(m_\xi\lsim M_*)$ at future colliders. Decays of $\xi^{++}$ into same-sign dileptons are fixed by the neutrino mass matrix. Observation of $\mu-e$ conversion in nuclei is predicted.
Ma Ernest
Raidal Martti
Sarkar Utpal
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