The Results of Oscillation Analysis in K2K Experiment And An Overview of JHFnu Experiment

I. Kato

Published 2003-06-19, updated 2003-06-30Version 2

This paper presents the results of oscillation analysis in K2K experiment. The results show indications of neutrino oscillation and give a new constraint on the oscillation parameters. The difference of neutrino masses squared $\Delta m^2$ lies between 1.5 and 3.9$\times10^{-3} {\rm eV}^2$ at $\sin^2 2\theta=1$ with the confidence level of 90%. In addition to these results, a brief overview of future long-baseline neutrino experiment in Japan, JHF-$\nu$ experiment, is also given in this paper.