Physical Reach of a Neutrino Factory in the 2+2 and 3+1 Four-Family Scenario

Abstract

We compare the physical reach of a Neutrino Factory in the 2+2 and 3+1 four-family models, with similar results in the two schemes; in both cases huge CP-violating effects can be observed with a near detector in the $ν_μ\to ν_τ$ channel. We also study the capability of long baseline experiments (optimized for the study of the three-family mixing parameter space) in distinguishing a three (active) neutrino model from a four-family scenario.

5 latex2e pages, 2 figures; talk given at NuFact '01, Tsukuba, 24-30 May 2001