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30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

Discriminating between Lorentz violation and non-standard interactions using core-passing atmospheric neutrinos at INO-ICAL

Not scheduled
Virtual Seoul

Virtual Seoul

Poster BSM searches in neutrinos Poster


Mr Sadashiv Sahoo (Institute of Physics, Bhubaneswar; Homi Bhabha National Institute, Mumbai)


Lorentz violation (LV) and non-standard interactions (NSI) are two of the most popular scenarios beyond the Standard Model (BSM) of particle physics. Both of these BSM physics can affect neutrino oscillation significantly. However, their effects can mimic each other, and it would be difficult to distinguish between them at a long-baseline experiment. Here, we show how the atmospheric neutrinos, which have access to a wide range of energies and baselines, can break this degeneracy. The large difference between the matter densities in the mantle and core of the Earth critically impacts the oscillation probabilities of the atmospheric neutrinos. Therefore, observations of core-passing atmospheric neutrinos and antineutrinos would be a potential tool to discriminate between these two BSM-physics scenarios. Using detector simulations of the Iron Calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO), we show that such a distinction is indeed possible. Further, we demonstrate the advantage of incorporating the charge identification capability at an atmospheric neutrino detector like ICAL for discriminating between these two new physics scenarios.

Collaboration India-based Neutrino Observatory

Primary authors

Mr Sadashiv Sahoo (Institute of Physics, Bhubaneswar; Homi Bhabha National Institute, Mumbai) Mr Anil Kumar (Institute of Physics, Bhubaneswar) Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar, HBNI, Mumbai, ICTP, Trieste,) Prof. Amol Dighe (Tata Institute of Fundamental Research, Mumbai, India)

Presentation Materials