Search for sterile neutrinos in the neutrino-4 experiment


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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 Δm142 and sin214.

About the authors

A. P. Serebrov

Petersburg Nuclear Physics Institute

Author for correspondence.
Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

V. I. Aleshin

National Research Center Kurchatov Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Moscow, 123182

A. L. Petelin

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

A. L. Izhutov

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

A. A. Tuzov

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

S. A. Sazontov

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

D. K. Ryazanov

Dimitrovgrad Engineering and Technical Institute, National Research Nuclear University MEPhI

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433511

M. O. Gromov

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

V. V. Afanas’ev

State Scientific Center Research Institute of Atomic Reactors

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Dimitrovgrad, Ul’yanovsk region, 433510

M. E. Zaitsev

Petersburg Nuclear Physics Institute; Dimitrovgrad Engineering and Technical Institute, National Research Nuclear University MEPhI

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300; Dimitrovgrad, Ul’yanovsk region, 433511

V. G. Tarasenkov

National Research Center Kurchatov Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Moscow, 123182

V. P. Martem’yanov

National Research Center Kurchatov Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Moscow, 123182

V. G. Ivochkin

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

R. M. Samoilov

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

A. K. Fomin

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

A. O. Polyushkin

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

V. G. Zinov’ev

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

P. V. Neustroev

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

V. L. Golovtsov

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

A. V. Chernyi

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

O. M. Zherebtsov

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

M. E. Chaikovskii

Petersburg Nuclear Physics Institute

Email: serebrov_ap@pnpi.nrcki.ru
Russian Federation, Gatchina, Leningrad region, 188300

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