Assessment of Super- and Hyper-Kamiokande Sensitivity to the DSNB
Abstract
The detection of the Diffuse Supernova Neutrino Background (DSNB) is one of the main goals of the current and the next generation of neutrino experiments. Based on results published by the Super-Kamiokande (SK) collaboration, we study the sensitivity of current and future water Cherenkov detectors to the DSNB. We reproduce current constraints and estimate the sensitivity to the DSNB of ten years of SK data and of a next-generation water-Cherenkov detector like Hyper-Kamiokande (HK). We find that, even with increased exposure, SK's sensitivity is relatively modest, while HK has the potential to deliver a statistically significant discovery of the DSNB in ten years. Along the way, we perform a detailed study of the relevant atmospheric neutrino backgrounds and argue that an accurate treatment of neutrino oscillations and propagation is essential when it comes to properly inferring the sensitivity to the DSNB and measuring its flux.
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BibTeX
@misc{blancomas2026assessment,
title = {{Assessment of Super- and Hyper-Kamiokande Sensitivity to the DSNB}},
author = {Pablo Blanco-Mas and André de Gouvêa and Iván Martínez-Soler},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.17705},
eprint = {2609.17705},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.17705},
note = {CC BY-SA 4.0},
}
RIS
TY - UNPB
TI - Assessment of Super- and Hyper-Kamiokande Sensitivity to the DSNB
AU - Pablo Blanco-Mas
AU - André de Gouvêa
AU - Iván Martínez-Soler
PY - 2026
DA - 2026/09/15
PB - arXiv
DO - 10.48550/arxiv.2609.17705
UR - https://arxiv.org/abs/2609.17705
AB - The detection of the Diffuse Supernova Neutrino Background (DSNB) is one of the main goals of the current and the next generation of neutrino experiments. Based on results published by the Super-Kamiokande (SK) collaboration, we study the sensitivity of current and future water Cherenkov detectors to the DSNB. We reproduce current constraints and estimate the sensitivity to the DSNB of ten years of SK data and of a next-generation water-Cherenkov detector like Hyper-Kamiokande (HK). We find that, even with increased exposure, SK's sensitivity is relatively modest, while HK has the potential to deliver a statistically significant discovery of the DSNB in ten years. Along the way, we perform a detailed study of the relevant atmospheric neutrino backgrounds and argue that an accurate treatment of neutrino oscillations and propagation is essential when it comes to properly inferring the sensitivity to the DSNB and measuring its flux.
ER -