Simplest Charged Lepton: Why So Light and Stable?
- Electron (no cage): 0.511 MeV — bare -eCP, perfectly stable
- Muon (1 cage): 105.7 MeV — tetrahedral cage, τ = 2.2 μs
- Tau (2 cages): 1776.8 MeV — tetra+icosa cages, τ = 2.9×10⁻¹³ s
Like the up quark among quarks, the electron is the lightest and most stable of its family.
The absence of cage structures means no decay pathways — the electron is absolutely stable.
Leptons use eCPs (electron-type) while quarks use qCPs (quark-type).
3D Structure View — Drag to rotate
Real-Time Measurements
Particle Type
Lepton (e-type)
Cage Structure
None (bare)
Stability
Absolutely Stable