The Reach of INO for Atmospheric Neutrino Oscillation Parameters

TL;DR

This paper evaluates the India-based Neutrino Observatory's potential to measure atmospheric neutrino oscillation parameters, including mixing angles and mass differences, using detailed detector simulations.

Contribution

It provides a detailed assessment of INO's sensitivity to key neutrino oscillation parameters and the octant of $ heta_{23}$ based on realistic detector simulations.

Findings

INO can measure $ heta_{23}$ and $| riangle m_{32}^2|$ with high precision.

The experiment has sensitivity to deviations of $ heta_{23}$ from maximal mixing.

INO can potentially determine the octant of $ heta_{23}$.

Abstract

The India-based Neutrino Observatory (INO) will host a 50 kt magnetized iron calorimeter (ICAL@INO) for the study of atmospheric neutrinos. Using the detector resolutions and efficiencies obtained by the INO collaboration from a full-detector GEANT4-based simulation, we determine the reach of this experiment for the measurement of the atmospheric neutrino mixing parameters ($\sin^2 \theta_{23}$ and $|\Delta m_{32}^2 |$). We also explore the sensitivity of this experiment to the deviation of $\theta_{23}$ from maximal mixing, and its octant.