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XENONnT Observes First Low-Energy Solar Neutrino-Electron Scattering Signals

Scientists of the XENON collaboration recently announced the first observation of low-energy solar neutrino scattering off electrons in the XENONnT particle detector. The results were presented at a workshop held on August 31, 2026, at the Gran Sasso National Laboratory of the Italian National Institute for Nuclear Physics. The team of Prof. Teresa Marrodán Undagoitia and Dr. Hardy Simgen from the Max Planck Institute for Nuclear Physics played a key role in the experiment. Nuclear fusion in the Sun continuously produces vast numbers of neutrinos, with hundreds of billions passing through every square centimeter of Earth each second. Because neutrinos interact with matter extremely weakly, detecting these particles...

2026-09-07

XENONnT Dark Matter Detector Captures Faintest Solar Neutrino Signal Ever Observed

September 1 news - The XENONnT dark matter detection experiment at the Gran Sasso National Laboratory in Italy has achieved new progress. The XENON collaboration research team announced that the detector has captured low-energy solar neutrino collision signals never observed before, lowering the neutrino detection energy threshold to approximately 17 kiloelectron-volts (keV). The research team's analysis indicates that the probability of the signal being merely a statistical fluctuation is less than one in a million. Neutrinos are elementary particles with no electric charge and extremely small mass, which can be produced in processes such as nuclear fusion reactions in the solar core, supernova explosions, and nuclear fission in reactors. Due to the extremely weak interaction between neutrinos and matter, vast numbers of neutrinos can pass through the Earth, which also makes detection...

2026-09-02