Determining the Neutrino Mass Hierarchy with INO, T2K, NOvA and Reactor Experiments

Understand

The relatively large measured value of $\theta_{13}$ has opened up the possibility of determining the neutrino mass hierarchy through earth matter effects.

• Amongst the current accelerator-based experiments only NOvA has a long enough baseline to observe earth matter effects.
• However, NOvA is plagued with uncertainty on the knowledge of the true value of $\delta_{CP}$, and this could drastically reduce its sensitivity to the neutrino mass hierarchy.
• The earth matter effect on atmospheric neutrinos on the other hand is almost independent of $\delta_{CP}$.