Exploring NSI using oscillation dip and valley in atmospheric neutrino experiments
Published in Journal of Physics: Conference Series, 2022
Recommended citation: Anil Kumar, Amina Khatun, Sanjib Kumar Agarwalla, Amol Dighe, "Exploring NSI using oscillation dip and valley in atmospheric neutrino experiments", 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) 012119. https://doi.org/10.1088/1742-6596/2156/1/012119
Abstract: We present a new approach to probe flavor-changing neutral-current non-standard neutrino interaction parameter εμτ using the oscillation dip and valley features. We use the simulated up/down ratio of reconstructed muons events at the proposed Iron Calorimeter (ICAL) detector at the India-based Neutrino Observatory to demonstrate that in presence of NSI parameter εμτ, the oscillation dip location shifts and oscillation valley bends. Utilizing the charge identification capability of ICAL, the opposite shifts in the oscillation dip locations and the contrast in the oscillation valley curvatures for μ- and μ+ can be used to place 90% C.L. bounds of about 2% on |εμτ| using 500 kt$\cdot$yr exposure. In our procedure, we take care of statistical fluctuations, systematic errors, and uncertainties in neutrino oscillation parameters.