Relativity · Closed-form
Production threshold
Fixed-target & collider
Production threshold
- FT KE
- 289.276
- Collider E each
- 1008.00
- γe→3e Eγ thr
- 2.04400
- pair note
- γe⁻ → e⁺e⁻e⁻ threshold: E_γ = 4 m_e in electron rest frame (√s ≥ 3m). Nuclear-field pair production ≈ 2 m_e.
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