Cowan–Reines neutrino experiment

The Cowan–Reines neutrino experiment, conducted in the 1950s by Clyde Cowan and Frederick Reines, was pivotal in the detection of neutrinos, a fundamental particle in particle physics. This experiment was the first to provide experimental evidence for the existence of neutrinos, which were proposed by Wolfgang Pauli in 1930 as a solution to the apparent loss of energy in beta decay processes.