Conclusion

Abstract

The study of neutrino oscillations provides a unique window to physics beyond SM. There have been a lot of progress in the neutrino oscillation physics in the recent years. The mixing angle $\theta _{13}$ is finally measured in 2012. To date, we know the value of all of the three mixing angles ($\theta _{12},\theta _{23},\theta _{13}$) and the mass splittings ($\varDelta m_{12}^2,|\varDelta m_{32}^2|$). However, the value of CP phase $\delta _{CP}$ is still not known yet. In this thesis, we reported the measurement of $\nu _{\mu }\rightarrow \nu _{e}$ oscillation. This oscillation mode is particularly important because it is sensitive to the value of $\delta _{CP}$ and $\theta _{13}$. There are two fundamental questions related to the measurement of neutrino oscillation. $\bullet$ Is there a CP violation in the lepton sector? $\bullet$ What is the physics behind the mixing pattern? Precise measurement of $\nu _{\mu }\rightarrow \nu _{e}$ is essential to address these questions.