Rare Z decays and neutrino flavor universality

Gauthier Durieux, Yuval Grossman, Matthias König, Eric Kuflik, Shamayita Ray

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We study rare four-body decays of the Z-boson involving at least one neutrino and one charged lepton. Large destructive interferences make these decays very sensitive to the Z couplings to neutrinos. As the identified charged leptons can determine the neutrino flavors, these decays probe the universality of the Z couplings to neutrinos. The rare four-body processes could be accurately measured at future lepton colliders, leading to percent level precision.

Original languageAmerican English
JournalPhysical Review D
Issue number9
StatePublished - 9 May 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.


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