Eur. Phys. J. C (2012) 72: 2089
https://doi.org/10.1140/epjc/s10052-012-2089-8

Letter

Hierarchically acting sterile neutrinos

¹ Physics Division, National Center for Theoretical Sciences, Hsinchu, 300, Taiwan
² National Tsing Hua University, Hsinchu, 300, Taiwan

^* e-mail: ryo.takahasi88@gmail.com

Received: 26 April 2012
Revised: 28 June 2012
Published online: 25 July 2012

Abstract

We propose that a hierarchical spectrum of sterile neutrinos (eV, keV, 10^13–15 GeV) is considered as the explanation for MiniBooNE and LSND oscillation anomalies, dark matter, and baryon asymmetry of the universe (BAU), respectively. The scenario can also realize the smallness of active neutrino masses by the seesaw mechanism.