Can atmospheric neutrino experiments provide the first hint of leptonic CP violation?

Understand

The measurement of a non-zero value of the 1-3 mixing angle has paved the way for the determination of leptonic CP violation.

• However the current generation long-baseline experiments T2K and NOvA have limited sensitivity to delta_{CP}.
• In this paper we show for the first time, the significance of that atmospheric neutrino experiments in providing the first hint of CP violation in conjunction with T2K and NOvA.
• In particular, we find that adding atmospheric neutrino data from the ICAL detector at the India-based Neutrino Observatory (INO) to T2K and NOvA results in a two-fold increase in the range of delta_{CP} values for which a 2 sigma hint of CP violation can be obtained.