Abstract The classical conservation of the lepton number is an accidental symmetry present in the Standard Model (SM). Thus. we consider here a scenario where the SM is extended with a U(1) gauge group. promoting the lepton number to a local symmetry. https://www.diegojavierfares.com/mega-offer-Classic-Premier-Navy-Drapery-Fabric-by-Premier-Prints-30-Yard-Bolt-super-offer/