Sensitivities for coherent elastic scattering of solar and supernova neutrinos with future NaI(Tl) dark matter search detectors of COSINE-200/1T

TL;DR

This paper explores the potential of future NaI(Tl) dark matter detectors to measure coherent elastic neutrino-nucleus scattering from solar and supernova neutrinos, highlighting improved sensitivity with reduced background and enhanced detector performance.

Contribution

It demonstrates the feasibility of detecting supernova neutrinos with >3σ sensitivity and assesses the marginal detection prospects for solar neutrinos in upcoming NaI(Tl) experiments.

Findings

Supernova neutrino detection with >3σ sensitivity within the Milky Way.

Approximately three solar neutrino observations are marginal under specified conditions.

Enhanced detector performance improves neutrino detection prospects.

Abstract

We investigate the prospects for measuring the coherent elastic neutrino-nucleus scattering of solar and supernova neutrinos in future NaI(Tl) dark matter detection experiments. Considering the reduced background and improved light yield of the recently developed NaI(Tl) crystals, more than 3$\sigma$ observation sensitivities of the supernova neutrino within the Milky Way are demonstrated. In the case of the solar neutrino, approximately 3 observations are marginal with a 1 ton NaI(Tl) experiment assuming an order of magnitude reduced background, five photoelectron thresholds, and 5-year data exposure.