Probing Dual NSI and CP Violation in DUNE and T2HK

Abstract

The latest results from the long baseline neutrino experiments show a hint of non-zero CP violation in the neutrino sector. In this article, we study the CP violation effects in the upcoming long-baseline neutrino experiments DUNE and T2HK. Non-standard interactions can affect the cleaner determination of CP violation parameter. It has been argued that the NSI can help alleviate the tension between the recent ${\delta }_{CP}$ measurements of NO$\nu$A and T2K experiments. We consider here the dual NSI due to ${ϵ}_{e\mu }$ and ${ϵ}_{e\tau }$, arising simultaneously to see the effects in neutrino oscillation probabilities. Moreover, the CP asymmetry parameter $A_{CP}$ exhibits a clear distinction between normal and inverted mass orderings in the DUNE experiment.

Comments: 30 pages, 46 figures. References added and typos corrected