Exploring the Violation of Lorentz Invariance using Atmospheric Neutrinos at INO-ICAL
Published in Journal of Physics: Conference Series, 2022
Recommended citation: Sadashiv Sahoo, Anil Kumar, Sanjib Kumar Agarwalla, "Exploring the Violation of Lorentz Invariance using Atmospheric Neutrinos at INO-ICAL", Proceedings of The 17th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2021), Online Conference, Valencia, Spain, 26 Aug - 30 Sep, 2021, Journal of Physics: Conference Series 2156 (2021) 012238. https://doi.org/10.1088/1742-6596/2156/1/012238
Abstract: We explore the signature of Lorentz Invariance Violation (LIV) in the Standard Model Extension framework by observing the atmospheric neutrinos and antineutrinos separately with the help of magnetized Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO). Using 500 kt-yr exposure of ICAL, we place stringent bounds on the CPT-violating LIV parameters $a_{\mu\tau}$, $a_{e\mu}$, and $a_{e\tau}$ (one-at-a-time) at 95% C.L. (1 d.o.f). We demonstrate the advantages of charge identification capability and hadron energy information at ICAL while constraining these LIV parameters. We also explore interesting correlations among various LIV parameters.