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A global quantum number assigned to leptons. Individual flavor numbers are violated by neutrino mixing; total lepton number is an accidental perturbative symmetry of the renormalizable Standard Model but participates in the nonperturbative anomaly and may be violated by Majorana masses or beyond-Standard-Model interactions.
wp-physics-lepton_numberpdg-2026-neutrinotong-particleEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Leptons carry lepton-number assignments in the Standard Model description, subject to neutrino mixing and possible beyond-model violation.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-leptonpdg-rpptong-particlewp-physics-lepton_numberpdg-2026-neutrinoThis is an authored directed relation from the source endpoint to the target endpoint.
Lepton numbers label leptonic states; flavor lepton numbers are violated by neutrino mixing and total lepton number is not established as exact.
The target is a member or subtype of the broader source class.
wp-physics-quantum_numbernist-atomic-spectroscopytong-quantumwp-physics-lepton_numberpdg-2026-neutrinotong-particleEach relation below starts at this concept.
No direct relations are authored in this direction.