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

M. G Aartsen, R Abbasi, M Ackermann, J Adams, J. A Aguilar, M Ahlers, M Ahrens, C Alispach, N. M Amin, K Andeen, …
arXiv.org
11 Oct 2021
DOI: https://doi.org/10.48550/arxiv.2005.12942
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https://doi.org/10.48550/arxiv.2005.12942View
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Abstract

Physics - High Energy Physics - Experiment Physics - High Energy Physics - Phenomenology
Phys. Rev. Lett. 125, 141801 (2020) 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 $\sin^2(2\theta_{24})=0.10$ 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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