Types

There are many different kinds of neutrinos—and ways to think about them:

• Neutrino flavors: electron (ν_e), muon (ν_μ), and tau (ν_τ).
• 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 ν_3.
• Neutrino energies: low, medium, or high.