There are many different kinds of neutrinos—and ways to think about them:
- Neutrino flavors: electron (νe), muon (νμ), and tau (ντ).
- Antineutrinos: neutrinos made of antimatter.
- Sterile neutrinos: a hypothesized fourth kind of neutrino.
- Neutrino masses: mass 1, 2, and 3, also referred to as ν1, ν2, and ν3.
- Neutrino energies: low, medium, or high.