28 August 2023 to 1 September 2023
University of Vienna
Europe/Vienna timezone

Unlocking the Light(er) Sterile Neutrino Sector: Matter Effects and Mass Ordering

30 Aug 2023, 15:30
1h
University of Vienna

University of Vienna

Universitätsring 1 A-1010 Vienna, Austria
Poster Neutrino physics and astrophysics Poster session

Speaker

Mr Dibya S. Chattopadhyay (Tata Institute of Fundamental Research, Mumbai)

Description

Future long-baseline experiments will be able to probe hitherto unexplored regions of sterile neutrino parameter space for masses ranging from meV to eV. We present an analytic calculation of the neutrino conversion probability $P(\nu_\mu \to \nu_e)$ in the presence of sterile neutrinos, with exact dependence on $\Delta m^2_{41}$ and matter effects. We further express the neutrino conversion probability as a sum of terms of the form $\sin(x)/x$, thus allowing a physical understanding of matter effects and their possible resonance-like behavior. We focus on the identification of sterile mass ordering (sign of $\Delta m^2_{41}$) at DUNE. The conversion probability obtained reveals the complex interplay between sterile and matter contributions. We perform numerical calculations of DUNE's sensitivity to sterile mass ordering over a broad range of sterile neutrino masses. Our analytic expressions enable us to explain the dependence of this sensitivity on $\Delta m^2_{41}$ values for all mass ordering combinations.

Submitted on behalf of a Collaboration? No

Authors

Mr Dibya S. Chattopadhyay (Tata Institute of Fundamental Research, Mumbai) Prof. Moon Moon Devi (Tezpur University, India) Prof. Amol Dighe (TIFR) Prof. Debajyoti Dutta (Assam Don Bosco University, Tapesia Campus, Sonapur, Assam) Dr Dipyaman Pramanik (Instituto de Física Gleb Wataghin - UNICAMP, 13083-859, Campinas, São Paulo, Brazil) Prof. Sushant K. Raut (Krea University, India)

Presentation materials