# Search for the differences in Atmospheric Neutrinos and Antineutrinos oscillation parameters at the INO-ICAL Experiment

## TL;DR

This study investigates potential differences in atmospheric neutrino and antineutrino oscillation parameters using simulated data from the INO-ICAL detector, aiming to detect a non-zero difference in their mass squared differences.

## Contribution

It provides a novel analysis of neutrino-antineutrino oscillation parameter differences using detailed simulations and a chi-squared minimization approach at the INO-ICAL experiment.

## Key findings

- Sensitivity to non-zero difference in mass squared differences.
- Separate oscillation parameter estimation for neutrinos and antineutrinos.
- Simulation results support potential to confirm differences in atmospheric oscillation parameters.

## Abstract

In this paper, we present a study to measure the differences between the atmospheric neutrino and anti-neutrino oscillations in the Iron-Calorimeter detector at the India-based Neutrino Observatory experiment. Charged Current $\nu_{\mu}$ and $\overline{\nu}_{\mu}$ interactions with the detector under the influence of earth matter effect have been simulated for ten years of exposure. The observed $\nu_{\mu}$ and $\overline{\nu}_{\mu}$ events spectrum are separately binned into direction and energy bins, and a $\chi^{2}$ is minimised with respect to each bin to extract the oscillation parameters for $\nu_{\mu}$ and $\overline{\nu}_{\mu}$ separately. We then present the ICAL sensitivity to confirm a non-zero value of the difference in atmospheric mass squared of neutrino and anti-neutrino i.e. $|\Delta m^{2}_{32}|-|\Delta\overline{m^{2}}_{32}|$.