Anomalous Cosmic‐Ray Data Suggest Oscillation Between Neutrino Flavors
OCT 01, 1994
DOI: 10.1063/1.2808665
When high‐energy cosmic ray protons and nuclei hit the top of the atmosphere, they generate showers of mesons that quickly decay to muons, electrons, positrons and neutrinos. A few kilometers below the surface of the Earth, nothing remains but the most energetic muons and almost all of the neutrinos. Irrespective of the complicated details, unimpeachable particle theory dictates that these hadronic showers produce, on average, twice as many muon‐flavored neutrinos (
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© 1994 American Institute of Physics
