Four species neutrino oscillations at $\nu$-Factory: sensitivity and CP-violation

Abstract

The prospects of measuring the leptonic angles and CP-odd phases at a {\em neutrino factory} are discussed in the scenario of three active plus one sterile neutrino. We consider the $ν_μ\raw ν_e$ LSND signal. Its associated large mass difference leads to observable neutrino oscillations at short ($\sim 1$ km) baseline experiments. Sensitivities to the leptonic angles down to $10^{-3}$ can be easily achieved with a 1 Ton detector. Longer baseline experiments ($\sim 100$ km) with a 1 Kton detector can provide very clean tests of CP-violation especially through tau lepton detection.

arXiv comment15 pages, LaTeX2e, 14 eps files, use package epsfig

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• Sterile neutrinos at the CNGS
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• Signals of eV-scale sterile neutrino at long baseline neutrino experiments
• CP-violation in 3- and 4-family at the Neutrino Factory