Revisiting the sensitivity studies for leptonic CP-violation and mass hierarchy with T2K, NOνA and LBNE experiments

Abstract

Precision measurement of neutrino mixing parameters and the determination of mass hierarchy are the primary goals of present and upcoming neutrino experiments. In this work, we study the sensitivity of T2K, NO ν A and LBNE experiments to discover leptonic charge parity (CP)-violation and the determination of neutrino mass hierarchy. We obtain the correlation between the CP-violating phase ${{\delta }_{{\rm CP}}}$ and the mixing angles ${{\theta }_{13}}$ , ${{\theta }_{23}}$ , and the sensitivity to determine the octant of atmospheric mixing angle ${{\theta }_{23}}$ . The entire analysis is performed for a total of ten years (5 ν + 5 $\bar{\nu }$ ) of the running of T2K, NO ν A and LBNE experiments. Furthermore, we also consider the impact of cross section uncertainties on the CP-violation sensitivity of the LBNE experiment.

Keywords

• neutrino physics
• CP violation
• mass hierarchy