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19–23 Dec 2024
Swatantrata Bhavan, Banaras Hindu University, Varanasi
Asia/Kolkata timezone

Probing deep interiors of Earth using atmospheric neutrino oscillations

Not scheduled
20m
Swatantrata Bhavan, Banaras Hindu University, Varanasi

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Department of Physics, I.Sc., Banaras Hindu University, 221005 Varanasi, India
Oral Neutrino Physics

Speaker

Mr Anuj Kumar Upadhyay (Aligarh Muslim University, Aligarh & Institute of Physics, Bhubneswar)

Description

Information about the interior of Earth is traditionally obtained through indirect probes such as seismic and gravitational measurements. Atmospheric neutrinos serve as an independent tool for probing the deep interiors of Earth using weak interactions, offering insights complementary to those obtained from other studies. As multi-GeV neutrinos pass through Earth, they experience Earth matter effects that depend on both neutrino energy and the electron density distribution along their path, making them ideally suited for exploring the inner structure of Earth. In this talk, we present the expected sensitivity of an atmospheric neutrino experiment, such as an iron calorimeter detector (ICAL), to simultaneously constrain the core radius and density jumps inside Earth. Our analysis uses a five-layered density model of Earth, where layer densities and the core radius are modified to explore the parameter space, ensuring that the mass and moment of inertia of Earth are conserved and the hydrostatic equilibrium condition is satisfied. Additionally, we show that the capability of the ICAL detector to distinguish neutrinos from antineutrinos is crucial for effectively constraining the parameter space.

Field of contribution Phenomenology

Authors

Mr Anuj Kumar Upadhyay (Aligarh Muslim University, Aligarh & Institute of Physics, Bhubneswar) Dr Anil Kumar (Institute of Physics, Bhubaneswar, SINP, Kolkata, HBNI, Mumbai, India) Prof. Sanjib Kumar Agarwalla (Institute of Physics, Bhubaneswar and University of Wisconsin-Madison) Prof. Amol Dighe (Tata Institute of Fundamental Research)

Presentation materials

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