Rare Z Decays and Neutrino Flavor Universality
High Energy Physics - Phenomenology
2016-05-18 v2
Abstract
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.
Keywords
Cite
@article{arxiv.1512.03071,
title = {Rare Z Decays and Neutrino Flavor Universality},
author = {Gauthier Durieux and Yuval Grossman and Matthias König and Eric Kuflik and Shamayita Ray},
journal= {arXiv preprint arXiv:1512.03071},
year = {2016}
}
Comments
8 pages, 6 figures; v2: minor updates, matches published version