CP and T violation in long baseline experiments with low energy neutrino

Stimulated by the idea of PRISM, a very high intensity muon ring with rather low energy, we consider possibilities of observing CP-violation effects in neutrino oscillation experiments. Destructive sum of matter effect and CP-violation effect can be avoided with use of initial $ν_{\rm e}$ beam. We finally show that the experiment with (a few) $\times$ 100 MeV of neutrino energy and (a few) $\times$ 100 km of baseline length, which is considered in this paper, is particularly suitable for a search of CP violation in view of 3-generation nature of CP violation.

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