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New Results of Measurements in the Neutrino-4 Experiment Devoted to Searches for Sterile Neutrinos.

Authors :
Serebrov, A. P.
Ivochkin, V. G.
Samoilov, R. M.
Fomin, A. K.
Zinoviev, V. G.
Neustroev, P. V.
Golovtsov, V. L.
Chernyj, A. V.
Zherebtsov, O. M.
Chaikovskii, M. E.
Petelin, A. L.
Izhutov, A. L.
Tuzov, A. A.
Sazontov, S. A.
Gromov, M. O.
Afanasiev, V. V.
Zaytsev, M. E.
Gerasimov, A. A.
Fedorov, V. V.
Source :
Physics of Atomic Nuclei; Nov2020, Vol. 83 Issue 6, p930-936, 7p
Publication Year :
2020

Abstract

New results of measurements of the dependences of the flux of reactor antineutrinos and their spectrum on the distance from the center of the core of the SM-3 reactor (Dimitrovgrad, Russia) in the range from 6 to 12 m are presented. Additional measurements were conducted. The volume of accumulated experimental data was increased nearly by a factor of two. A model-independent analysis was performed on the basis of all data in order to determine the oscillation parameters and . The method of a coherent summation of measurement results makes it possible to demonstrate directly the oscillation effect. We observed the oscillation effect at a level of three standard deviations () in the vicinities of parameters values of eV and . Combining the results of the Neutrino-4 experiment with results for the gallium anomaly and for the reactor anomaly, we obtained the following value: . [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10637788
Volume :
83
Issue :
6
Database :
Complementary Index
Journal :
Physics of Atomic Nuclei
Publication Type :
Academic Journal
Accession number :
148657095
Full Text :
https://doi.org/10.1134/S1063778820060265