The sensitivity of the ICAL detector at India-based Neutrino Observatory to neutrino oscillation parameters

Abstract

The India-based Neutrino Observatory (INO) will host a 50 kt magnetized iron calorimeter (ICAL) detector that will be able to detect muon tracks and hadron showers produced by Charged-Current muon neutrino interactions in the detector. The ICAL experiment will be able to determine the precision of atmospheric neutrino mixing parameters and neutrino mass hierarchy using atmospheric muon neutrinos through earth matter effect. In this paper, we report on the sensitivity for the atmospheric neutrino mixing parameters (${\sin }^2{\theta }_{23}$ and $|\Delta m_{32}^2|$) for the ICAL detector using the reconstructed neutrino energy and muon direction as observables. We apply realistic resolutions and efficiencies obtained by the ICAL collaboration with a GEANT4-based simulation to reconstruct neutrino energy and muon direction. Our study shows that using neutrino energy and muon direction as observables for a ${\chi }^2$ analysis, ICAL detector can measure ${\sin }^2{\theta }_{23}$ and $|\Delta m_{32}^2|$ with 13% and 4% uncertainties at 1$\sigma$ confidence level for 10 years of exposure.

References in corpus (6)

• Observation of electron-antineutrino disappearance at Daya Bay
• Measurement of the solar neutrino capture rate with gallium metal. III: Results for the 2002--2007 data-taking period
• Global fit to three neutrino mixing: critical look at present precision
• Solar neutrino measurements in Super-Kamiokande-II
• A Simulations Study of the Muon Response of the Iron Calorimeter Detector at the India-based Neutrino Observatory
• Enhancing sensitivity to neutrino parameters at INO combining muon and hadron information

Cited by in corpus (1)

• Energy and Direction Estimation of Neutrinos in muonless events at ICAL