6533b860fe1ef96bd12c3ab5
RESEARCH PRODUCT
Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux
M. MyyryläinenP. KeränenJ. RiittinenJukka MaalampiJukka Maalampisubject
PhysicsNuclear and High Energy PhysicsSterile neutrinoParticle physicsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::PhenomenologyFOS: Physical sciencesSolar neutrino problemCosmic neutrino backgroundHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Neutrino detectorMeasurements of neutrino speedHigh Energy Physics::ExperimentNeutrinoNeutrino oscillationdescription
We investigate the effect of sterile neutrinos that are nearly degenerate with active ones on the flux of ultrahigh-energy cosmic ray neutrinos at earth. This offers a way to probe neutrino oscillations in the mass-squared range (10^{-16} eV^2 < ��m^2 < 10^{-11} eV^2) which maybe hard to detect by any other means. Taking into account the present experimental uncertainties of the active-active mixing angles and by allowing any values for the active-sterile mixing angles we find that the ratio of the electron and muon neutrino fluxes may change by -40 % to 70 % in comparison with the ratio in the absence of active-sterile mixing.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-11-01 |