Speaker
Description
The COHERENT collaboration reports a new measurement of coherent elastic neutrino–nucleus scattering (CEvNS) using low-threshold high-purity germanium detectors deployed at the Spallation Neutron Source at Oak Ridge National Laboratory. This result extends the first observation by significantly increasing statistics, improving sensitivity to low nuclear recoil energies, and enhancing background rejection. The analysis employs refined waveform processing and pulse-shape discrimination which enable sub-keV energy thresholds while maintaining high signal acceptance. The measured CEvNS rate is compared to Standard Model predictions, providing constraints on potential deviations such as non-standard neutrino interactions. This measurement represents one of the most precise CEvNS results to date and highlights the impact of low-threshold germanium detectors for precision neutrino physics.