| Generation | Lepton | Charge | Mass (GeV/c2) |
|---|---|---|---|
| 1st generation | electron (e-) | -1 | 5.11x10-4 |
| electron-neutrino (n e) | 0 | <1.14x10-8 | |
| 2nd generation | muon ( m -) | -1 | 0.106 |
| muon-neutrino ( n m) | 0 | <2.67x10-4 | |
| 3rd generation | tau ( t -) | -1 | 1.78 |
| tau-neutrino ( n t) | 0 | <0.080 |
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