Science20th century (1930)Europehigh confidence

Wolfgang Pauli proposed the existence of the neutrino in 1930 to resolve an apparent energy loss problem in a radioactivity experiment.

Notes on verification

Well-established history of physics, corroborated by multiple independent authoritative sources including APS, CERN archives, and Pauli biographies. [tier=gold indep_score=0.983 clusters=3 claim_tier=notable | kind=attributed eligibility=high]

Sources