https://doi.org/10.1140/epjc/s10052-018-6345-4
Regular Article - Theoretical Physics
Sterile neutrinos in string derived models
Department of Mathematical Sciences, University of Liverpool, Liverpool, L69 7ZL, UK
* e-mail: alon.faraggi@liv.ac.uk
Received:
27
August
2018
Accepted:
14
October
2018
Published online:
27
October
2018
The MiniBooNE collaboration recently reported further evidence for the existence of sterile neutrinos, implying substantial mixing with the left-handed active neutrinos and at a comparable mass scale. I argue that while sterile neutrinos may arise naturally in large volume string models, they prove more of a challenge in heterotic-string models that replicate the Grand Unified Theory structure of the Standard Model matter states. Sterile neutrinos in heterotic-string models may imply the existence of an additional Abelian gauge symmetry of order 10–100 TeV.
© The Author(s), 2018
