A. G. Beda, V. B. Brudanin, E. V. Demidova, V. G. Egorov, D. V. Medvedev, M. V. Shirchenko, A. S. Starostin, Ts. Vylov
Abstract
The result of the 3-year neutrino magnetic moment measurement at the Kalinin Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. Antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed at a distance of 13.9 m from the 3 GW_th reactor core is exposed to the antineutrino flux of 2.7 × 10^13 cm^−2 s^−1. The scattered electron spectra taken in (5184 + 6798) and (1853 + 1021) h for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment μ_v < 3.2 × 10^−11μ_ B at 90% CL is derived from the data processing.
Citation format
BEDA, A. G., et al. GEMMA experiment: Three years of the search for the neutrino magnetic moment [preprint]. arXiv, 2009. arXiv:0906.1926.