Publication:
Searches for sterile neutrinos at very short baseline reactor experiments

Дата
2019
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Издатель
Научные группы
Организационные подразделения
Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© Published under licence by IOP Publishing Ltd.For a long time there were 3 main experimental indications in favor of the existence of sterile neutrinos: e appearance in the μ beam in the LSND experiment ve flux deficit in comparison with theoretical expectations in reactor experiments, and ve deficit in calibration runs with radioactive sources in the Ga solar neutrino experiments SAGE and GALEX. All three problems can be explained by the existence of sterile neutrinos with the mass square difference in the ballpark of 1 eV2. Recently the MiniBooNE collaboration observed electron (anti)neutrino appearance in the muon (anti)neutrino beams. The significance of the effect reaches 6.0σ level when combined with the LSND result. Even more recently the NEUTRINO-4 collaboration claimed the observation of ve oscillations to sterile neutrinos with a significance slightly higher than 3σ. If these results are confirmed, New Physics beyond the Standard Model would be required. More than 10 experiments are devoted to searches of sterile neutrinos. Six very short baseline reactor experiments are taking data just now. We review the present results and perspectives of these experiments.
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Danilov, M. Searches for sterile neutrinos at very short baseline reactor experiments / Danilov, M. // Journal of Physics: Conference Series. - 2019. - 1390. - № 1. - 10.1088/1742-6596/1390/1/012049
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