Global constraints on a heavy neutrino

Andre Luiz De Gouvea, Andrew Kobach

Research output: Contribution to journalArticle

71 Scopus citations

Abstract

We estimate constraints on the existence of a heavy, mostly sterile neutrino with mass between 10 eV and 1 TeV. We improve upon previous analyses by performing a global combination and expanding the experimental inputs to simultaneously include tests for lepton universality, lepton-flavor-violating processes, electroweak precision data, dipole moments, and neutrinoless double beta decay. Assuming the heavy neutrino and its decay products are invisible to detection, we further include, in a self-consistent manner, constraints from direct kinematic searches, the kinematics of muon decay, cosmology, and neutrino oscillations, in order to estimate constraints on the values of |Ue4|2, |Uμ4|2, and |Uτ4|2.

Original languageEnglish (US)
Article number033005
JournalPhysical Review D
Volume93
Issue number3
DOIs
StatePublished - Feb 12 2016

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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