Baryons Mesons Leptons Gauge
e μ τ ν

Particle mass [MeV] t1/2 Spin/Parity μ [nm] Q [b] Ref. Std Citation doi
ν < 2 eV > 300 s/eV 1/2 < 0.29 × 10-10 μB 10.1088/1674-1137/38/9/090001