Constraints on sterile neutrino mixing using IceCube atmospheric neutrino data

Sterile neutrinos with ∼ 1 eV mass scale can resolve anomalies reported in short-baseline neutrino oscillation experiments. The same sterile neutrinos can affect the atmospheric neutrino fluxes at the detectors such as IceCube in the TeV energy range. Recent IceCube search results for a sterile neutrino resulted in stringent constraints on its mass and mixing with active neutrinos, essentially excluding the parameter space favored by the short-baseline experiments. In our recent reanalysis of IceCube data we show that sterile-active neutrino mixing schemes affect interpretation of the excluded parameter regions. We present exclusion regions in the mixing angle range 0.01 ≤ sin² θ₂₄ ≤ 0.1 and mass-squared difference range 0.1 eV² ≤ ∆m²₄₂ ≤ 10 eV² for the mass-mixing and flavor-mixing schemes. We exclude the parameter space favored by recent MiniBooNE analysis at & 2σ CL for both schemes.