Is there a new neutral lepton?

D. Horn, G. G. Ross

Research output: Contribution to journalArticlepeer-review


We discuss conservation laws of lepton flavors within the context of unified weak and electromagnetic gauge theories. We show that the present upper limit on the new (U) lepton-number violating processes U→3 charged leptons already requires the presence of a neutral lepton in the SU(2) ⊗ U(1) theory. We discuss some of the possibilities and point out the constraints implied by lowering the bounds on μ→eγ and U→3 charged leptons.

Original languageEnglish
Pages (from-to)460-462
Number of pages3
JournalPhysics Letters B
Issue number4
StatePublished - 25 Apr 1977
Externally publishedYes


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