Search for Diffuse Supernova Neutrino Background of All Flavors with PandaX-4T

@misc{zhang2026search,
  title = {{Search for Diffuse Supernova Neutrino Background of All Flavors with PandaX-4T}},
  author = {Yingxin Zhang and PandaX Collaboration},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.05980},
  eprint = {2610.05980},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.05980},
}

TY  - UNPB
TI  - Search for Diffuse Supernova Neutrino Background of All Flavors with PandaX-4T
AU  - Yingxin Zhang
AU  - PandaX Collaboration
PY  - 2026
DA  - 2026/10/05
PB  - arXiv
DO  - 10.48550/arxiv.2610.05980
UR  - https://arxiv.org/abs/2610.05980
AB  - We present the first search for the diffuse supernova neutrino background utilizing coherent elastic neutrino-nucleus scattering with the PandaX-4T liquid xenon detector at the China Jinping Underground Laboratory. Based on a total exposure of 1.54 tonne · year from the commissioning and first science runs, we observe no significant event excess over the expected background. We therefore set an upper limit of (2.27 − 2.43) × 10^3 cm^−2s^−1 per flavor at 90\% confidence level on the ν_x flux (each of ν_μ, ν̅_μ, ν_τ, ν̅_τ) of the diffuse supernova neutrino background for incident neutrino energies above 19.3~MeV. The result is comparable to the current world best limit.
ER  -