An eV-scale sterile neutrino search using eight years of atmospheric muon neutrino data from the IceCube Neutrino Observatory


Abstract in English

The results of a 3+1 sterile neutrino search using eight years of data from the IceCube Neutrino Observatory are presented. A total of 305,735 muon neutrino events are analyzed in reconstructed energy-zenith space to test for signatures of a matter-enhanced oscillation that would occur given a sterile neutrino state with a mass-squared differences between 0.01,eV$^2$ and 100,eV$^2$. The best-fit point is found to be at $sin^2(2theta_{24})=0.10$ and $Delta m_{41}^2 = 4.5{rm eV}^2$, which is consistent with the no sterile neutrino hypothesis with a p-value of 8.0%.

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