Lepton - Table of Leptons

Table of Leptons

Properties of leptons
Particle/Antiparticle Name Symbol Q (e) S Le Lμ Lτ Mass (MeV/c2) Lifetime (s) Common decay
Electron / Antielectron e−/e+ −1/+1 1⁄2 +1/−1 0 0 0.510998910(13) Stable Stable
Muon / Antimuon μ−/μ+ −1/+1 1⁄2 0 +1/−1 0 105.6583668(38) 2.197019(21)×10−6 e− + ν
e + ν
μ
Tau / Antitau τ−/τ+ −1/+1 1⁄2 0 0 +1/−1 1,776.84(17) 2.906(10)×10−13 See τ− decay modes
Electron neutrino / Electron antineutrino ν
e/ν
e		 0 1⁄2 +1/−1 0 0 < 0.0000022 Unknown
Muon neutrino / Muon antineutrino ν
μ/ν
μ		 0 1⁄2 0 +1/−1 0 < 0.17 Unknown
Tau neutrino / Tau antineutrino ν
τ/ν
τ		 0 1⁄2 0 0 +1/−1 < 15.5 Unknown

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