The silver channel at the Neutrino Factory

Donini, A.; Meloni, D.; Migliozzi, P.

The silver channel at the Neutrino Factory

Authors

Donini, A.

Meloni, D.

Migliozzi, P.

Description

We notice that looking for $ν_e \to ν_τ$ at the same time as $ν_e \to ν_μ$ oscillations could significantly help to reduce the errors in the leptonic CP-violating phase $δ$ measurement. We show how the $ν_e \to ν_μ$ (``golden'') and $ν_e \to ν_τ$ (``silver'') transitions observed at an OPERA-like 2 Kton lead-emulsion detector at L = 732 Km, in combination with the $ν_e \to ν_μ$ transitions observed at a 40 Kton magnetized iron detector with a baseline of L = 3000 Km, strongly reduce the so-called $(θ_{13}, δ)$ ambiguity. We also show how a moderate increase in the OPERA-like detector mass (4 Kton instead of 2 Kton) completely eliminates the clone regions even for small values of $θ_{13}$.
Latex2e, 36 pages, using epsfig