Abstract
The correspondence of the results obtained in the Neutrino-4 experiment with the results of the NEOS, DANSS, STEREO, and PROSPECT experiments at reactors, the MiniBooNE, LSND, and MicroBoone experiments at accelerators, and the IceCube and BEST experiments with a 51Cr neutrino source is analyzed. The agreement between the results of the Neutrino-4 experiment, the BEST experiment, and the gallium anomaly on the mixing angle is discussed. The discrepancy between the results of the listed direct experiments with the results of the reactor anomaly, as well as with constraints from solar and cosmological data, is discussed. It is shown that the results of these direct experiments on the search for sterile neutrinos and the IceCube experiment do not contradict the Neutrino-4 experiment within the 3 + 1 neutrino model within 3σ contours of experimental errors. The sterile neutrino parameters from the Neutrino-4 and BEST experiments make it possible to estimate the sterile neutrino mass as m4 = (2.70 ± 0.22) eV and the effective mass of the electron neutrino as \({{m}_{{4{{\nu }_{e}}}}}\) = (0.86 ± 0.21) eV. The matrix of the absolute values of the 3 + 1 neutrino model mixing parameters and the mixing scheme are presented.
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ACKNOWLEDGMENTS
We are grateful to our colleagues from the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute and from the Institute for Nuclear Research, Russian Academy of Sciences for useful discussions in seminars. The members of the Neutrino-4 collaboration thank Carlo Rubbia for drawing attention to the results of our experiment.
Funding
This work was supported by the Russian Science Foundation, project no. 20-12-00079.
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Translated by R. Tyapaev
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Serebrov, A.P., Samoilov, R.M. & Chaikovskii, M.E. Analysis of the Result of the Neutrino-4 Experiment Together with Other Experiments on the Search for Sterile Neutrinos within the 3 + 1 Neutrino Model. J. Exp. Theor. Phys. 137, 55–70 (2023). https://doi.org/10.1134/S1063776123070130
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DOI: https://doi.org/10.1134/S1063776123070130