Akira Takamura

Measuring the Leptonic CP Phase in nu_mu --> nu_mu Oscillations

Abstract
In $\nu_{\mu} \to \nu_{\mu}$ oscillation, we find that the effect of the CP phase $\delta$ becomes large in the region $E < 5$ GeV and $L > 2000$ km. In this region, the change of the probability in this channel reaches about 0.5 due to the CP phase effect beyond our expectation in the case of large 1-3 mixing angle. As an example, we use an experimental setup and demonstrate that the allowed region is limited to one by combined analysis of $\nu_e$ and $\nu_{\mu}$ events although there remain three allowed regions by the analysis of $\nu_e$ events alone.

[PPT]