Comparative Study of tau neutrinos event numbers in INO and JUNO detectors from Bartol Flux

TL;DR

This study compares the expected tau neutrino event detection capabilities of the JUNO and INO detectors, highlighting their potential contributions to understanding neutrino oscillations and properties through theoretical and experimental analysis.

Contribution

It provides a comparative analysis of tau neutrino detection prospects in JUNO and INO, including event estimates and sensitivity over time.

Findings

JUNO can detect around 50 tau neutrino events per year.

Both INO and JUNO have 5 sigma sensitivity within 5 to 10 years.

Theoretical calculations of tau neutrino cross-sections underpin the analysis.

Abstract

To expand our understanding of neutrino physics, scientific researchers of astroparticle Physics directs their goal of detecting atmospheric tau neutrinos in the GeV range. The effort will fundamentally unlock the nature of these elusive particles while also investigating muon neutrinos and tau neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO), which has already started its operations in 2024, and the India-based Neutrino Observatory (INO), which is not active right now but has future objectives in conducting research, have both emerged as key players in this field. These experiments used theoretical and experimental methodologies to understand the properties and behaviour of atmospheric tau neutrinos. The JUNO experiment, which has an estimated ability to detect around 50 events per year, and the INO, which used an impressive 50,000-ton iron slab as a detector, will contribute significantly in this domain. The detection of all tau neutrinos charged-current (CC) interactions with the detection material, which is divided into former and later events based on the timeline corresponding to scattering and capture in the detector; moreover, the KamLAND experiment is also capable of detecting these tau neutrinos decays, however, in smaller proportions, which could be possibly confused with background signals emerging from oscillations. This has been studied for both experiments for tau neutrinos nuclei cross-sections, and its standard value is taken as a base for calculations. Both INO and JUNO have 5 sigma sensitivity, which was exposed for 5 to 10 years.