A deuterated liquid scintillator for supernova neutrino detection

1 Sep 2021, 17:10
Talk in parallel session Neutrino physics and astrophysics Discussion Panel Neutrinos 5


Bhavesh Chauhan (Tata Institute of Fundamental Research, India)


For the next galactic supernova, operational neutrino telescopes will measure the neutrino flux several hours before their optical counterparts. Existing detectors, relying mostly on charged current interactions, are mostly sensitive to $\bar{\nu}_e$ and to a lesser extent to $\nu_e$. In order to measure the flux of other flavors ($\nu_{\mu},\bar{\nu}_{\mu},\nu_{\tau},\text{and}~\bar{\nu}_{\tau}$), we need to observe their neutral current interactions with the detector. Such a measurement is not only crucial for overall normalization of the supernova neutrino flux but also for understanding the intricate neutrino oscillation physics. A deuterium based detector will be sensitive to all neutrino flavors. In this talk, I will present our proposal for a 1\,kton deuterated liquid scintillator (DLS) based detector that will see about 435 neutral current events and 170 (108) charged current $\nu_e$ ($\bar{\nu}_e$) events from a fiducial supernova at a distance of 10 kpc from Earth. We explore the possibility of extracting spectral information from the neutral current channel $\overset{\scriptscriptstyle(-)}{\nu} d \rightarrow \overset{\scriptscriptstyle(-)}{\nu}np$ by measuring the quenched kinetic energy of the proton in the final state, where the neutron in the final state is tagged and used to reduce backgrounds.

Reference to paper (DOI or arXiv) arXiv:2106.10927

Primary author

Bhavesh Chauhan (Tata Institute of Fundamental Research, India)


Prof. Basudeb Dasgupta (Tata Institute of Fundamental Research, Mumbai, India) Prof. Vivek Datar (The Institute of Mathematical Sciences, Chennai, India)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now