Abstract
The first result obtained in the measurements of the neutrino magnetic moment at the Kalinin nuclear power plant with the GEMMA spectrometer is presented. A high-purity germanium detector of mass 1.5 kg placed at a distance of 13.9 m from the reactor core is used in the spectrometer. The antineutrino flux at the detector position is 2.73 × 1013 \( \bar \nu \)/(cm2 s). The differential method is used to select events of electromagnetic antineutrino-electron scattering. The spectra taken in the reactor-on and reactor-off modes over 6200 and 2064 h, respectively, are compared. On the basis of a data analysis, an upper limit of 5.8 × 10−11 μB was set on the neutrino magnetic moment μ ν at a 90% C.L.
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Original Russian Text © A.G. Beda, V.B. Brudanin, E.V. Demidova, C.Vylov, M.G. Gavrilov, V.G. Egorov, A.S. Starostin, M.V. Shirchenko, 2007, published in Yadernaya Fizika, 2007, Vol. 70, No. 11, pp. 1925–1935.
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Beda, A.G., Brudanin, V.B., Demidova, E.V. et al. First result for the neutrino magnetic moment from measurements with the GEMMA spectrometer. Phys. Atom. Nuclei 70, 1873–1884 (2007). https://doi.org/10.1134/S1063778807110063
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DOI: https://doi.org/10.1134/S1063778807110063