High energy versions of this phenomenon occur via Mikheyev-Smirnov-Wolfenstein resonance in the sun, and atmospheric angular variations in the muon rate are central to the balance of subtypes of the particles involved, which suggests a non-zero mass for them.
The Kimura-Takamura-Yokomakura equation calculates the probability of this occurrence in matter of constant density. The debated Klapdor-Kleingrothaus experiment, if duplicated, may obviate the most widely accepted reasons for this phenomenon, which is implied by the nonzero phase factors of Makai-Nakagawa-Sakata matrices, by proving the subjects in question (*) annihilate themselves during germanium-76 decay. High energy versions of this phenomenon occur via Mikheyev-Smirnov-Wolfenstein resonance in the sun, and atmospheric angular variations in the muon rate are central to the balance of subtypes of the particles involved, which suggests a non-zero mass for them. First predicted by Bruno Pontecorvo, for 10 points, name this phenomenon first observed at the Super-Kamiokande observatory by which certain uncharged leptons may change flavors.
The Kimura-Takamura-Yokomakura equation calculates the probability of this occurrence in matter of constant density.
{neutrino oscillations} [accept {change} in {flavors} or {neutrino flavor oscillations} until mentioned]