Probing Nonstandard Neutrino Physics by Two Identical Detectors with Different Baselines

TL;DR

This paper evaluates the Kamioka-Korea two-detector neutrino experiment's ability to detect nonstandard neutrino physics phenomena, showing it generally enhances sensitivity over single-detector setups and improves current bounds.

Contribution

It demonstrates the enhanced sensitivity of the two-detector system to various nonstandard neutrino physics effects compared to single-detector configurations.

Findings

Greater sensitivity to quantum decoherence and Lorentz violation.

Significant improvement in bounds on nonstandard neutrino interactions.

Less sensitivity to CPT violation and matter interactions.

Abstract

The Kamioka-Korea two detector system is a powerful experimental setup for resolving neutrino parameter degeneracies and probing CP violation in neutrino oscillation. In this paper, we study sensitivities of this same setup to several nonstandard neutrino physics such as quantum decoherence, tiny violation of Lorentz symmetry, and nonstandard interactions of neutrinos with matter. In most cases, the Kamioka-Korea two-detector setup is more sensitive than the one-detector setup, except for the Lorentz symmetry violation with CPT violation, and the nonstandard neutrino interactions with matter. It can achieve significant improvement on the current bounds on nonstandard neutrino physics.