Prediction on CP Violation in Long Baseline Neutrino Oscillation Experiments

We predict CP violation in the long baseline accelerator experiments taking into consideration the recent LSND data and the atmospheric neutrino data. The estimated upper bound of CP violation is 0.006, which may be observable in the long baseline accelerator experiments. It is found that the upper bound increases to 0.01 if the LSND data is excluded. The matter effect, which is not CP invariant, is found to be very small in the case we consider.Comment: 23 pages, LaTex file, 4 figures included using epsfig fig.3 and 4 are added. To be published in PT

Impact of Ue3U_{e3} on Neutrino Models

We have discussed the impact of $U_{e3}$ on the model of the neutrino mass matrix. In order to get the small $U_{e3}$, some flavor symmetry is required. Typical two models are investigated. The first one is the model in which the bi-maximal mixing is realized at the symmetric limit. The second one is the texture zeros of the neutrino mass matrix.Comment: Invited talk presented at NOON200