Prospects for the Detection of the Diffuse Supernova Neutrino Background with the Experiments SK-Gd and JUNO

Prospects for the Detection of the Diffuse Supernova Neutrino Background with the Experiments SK-Gd and JUNO

The advent of gadolinium-loaded Super-Kamiokande (SK-Gd) and of the soon-to-start JUNO liquid scintillator detector marks a substantial improvement in global sensitivity for the Diffuse Supernova Neutrino Background (DSNB). The present article reviews the detector properties most relevant for the DS...

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Bibliographic Details
Published in:Universe (Basel) 2022-03, Vol.8 (3), p.181
Main Authors: Li, Yu-Feng, Vagins, Mark, Wurm, Michael
Format: Article
Language:eng
Subjects:
astrophysical neutrinos
Baseline studies
Black holes
Diffuse Supernova Neutrino Background
Energy
Experiments
Gadolinium
Gamma rays
Hydrogen
liquid scintillator detectors
Observatories
Sensors
Star & galaxy formation
Supernovae
water Cherenkov detectors
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Summary:The advent of gadolinium-loaded Super-Kamiokande (SK-Gd) and of the soon-to-start JUNO liquid scintillator detector marks a substantial improvement in global sensitivity for the Diffuse Supernova Neutrino Background (DSNB). The present article reviews the detector properties most relevant for the DSNB searches in both experiments and estimates the expected signal and background levels. Based on these inputs, we evaluate the sensitivity of both experiments individually and combined. Using a simplified statistical approach, we find that both SK-Gd and JUNO have the potential to reach >3σ evidence of the DSNB signal within 10 years of measurement. Combination of their results is likely to enable a 5σ discovery of the DSNB signal within the next decade.
ISSN:2218-1997
2218-1997