2024/01/13 by PandaX Collaboration, Xiaoying Lü, Lu, Xiaoying +171 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2401.07045
openalex publication_date 2024/01/13 · openalex created_date 2024/01/18 · openalex updated_date 2026/07/28
The proton-proton (pp) fusion chain dominates the neutrino production from the Sun. The uncertainty of the predicted pp neutrino flux is at the sub-percent level, whereas that of the best measurement is O(10%). In this paper, we present the first result to measure the solar pp neutrinos in the electron recoil energy range from 24 to 144 keV, using the PandaX-4T commissioning data with 0.63 tonne×year exposure. The pp neutrino flux is determined to be (8.0 ± 3.9 \rm(stat) ± 10.0 \rm(syst) )× 1010 \rms-1 \rmcm-2, consistent with Standard Solar Model and existing measurements, corresponding to a flux upper limit of 23.3× 1010 \rms-1 \rmcm-2 at 90% C.L..