Non-Standard Interaction of atmospheric neutrino in future experiments

Abstract

We show the prospects of probing neutral-current non-standard interaction (NSI) in the propagation of atmospheric neutrinos in future large-volume neutrino experiments including DUNE, HK, KNO, and ORCA. For DUNE, we utilize its ability of identifying the tau neutrino event and combine the ${\nu }_{\tau }$ appearance with the ${\nu }_{\mu }$ disappearance. Based on our simulated results, the ten years of data taking of the atmospheric neutrinos can enormously improve the bounds on the NSI parameters ${\epsilon }_{\mu \tau },|{\epsilon }_{\mu \mu }-{\epsilon }_{\tau \tau }|$, ${\epsilon }_{e\mu }$, ${\epsilon }_{e\tau }$ and $|{\epsilon }_{\mu \mu }-{\epsilon }_{ee}|$ by a couple of orders of magnitudes. In addition, we show the expected correlations between the CP-violation phase ${\delta }_{CP}$ and the NSI parameters ${\epsilon }_{e\mu },{\epsilon }_{e\tau }$, and $|{\epsilon }_{ee}-{\epsilon }_{\mu \mu }|$ and confirm the potentials of DUNE, HK, KNO (combined with HK) in excluding the "No CP violation" hypothesis at 1$\sigma$, 2$\sigma$, and 3$\sigma$, respectively.

arXiv comment17 pages, 9 figures

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