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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2017 Volume 105, Issue 6, Pages 329–334 (Mi jetpl5216)

This article is cited in 3 papers

FIELDS, PARTICLES, AND NUCLEI

Search for sterile neutrinos in the neutrino-4 experiment

A. P. Serebrova, V. G. Ivochkina, R. M. Samoilova, A. K. Fomina, A. O. Polyushkina, V. G. Zinov'eva, P. V. Neustroeva, V. L. Golovtsova, A. V. Chernyia, O. M. Zherebtsova, V. P. Martem'yanovb, V. G. Tarasenkovb, V. I. Aleshinb, A. L. Petelinc, A. L. Izhutovc, A. A. Tuzovc, S. A. Sazontovc, D. K. Ryazanovd, M. O. Gromovc, V. V. Afanas'evc, M. E. Zaitsevad, M. E. Chaikovskiia

a Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Leningrad region, Russia
b National Research Center Kurchatov Institute, Moscow, Russia
c State Scientific Center Research Institute of Atomic Reactors, Dimitrovgrad, Ul'yanovsk region, Russia
d Dimitrovgrad Engineering and Technical Institute, National Research Nuclear University MEPhI, Dimitrovgrad, Ul'yanovsk region, Russia

Abstract: An experimental search for sterile neutrinos has been carried out at a neutrino facility based on the SM-3 nuclear reactor in Dimitrovgrad, Russia. The movable detector with passive shielding against the external radiation may be positioned at a distance varying between $6$ and $12$ m from the center of the reactor. The antineutrino flux has for the first time been measured using a movable detector placed close to the antineutrino source. The accuracy of the measurements is largely restricted by the cosmic background. The results of the measurements performed at small and large distances are analyzed in terms of the sterile-neutrino model parameters $\Delta m_{14}^2$ and $\sin^22\theta_{14}$.

Received: 03.02.2016
Revised: 20.02.2017

DOI: 10.7868/S0370274X17060017


 English version:
Journal of Experimental and Theoretical Physics Letters, 2017, 105:6, 347–351

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