/ Experiment-HEP arXiv:0906.1926


GEMMA experiment: Three years of the search for the neutrino magnetic moment


Beda, A.G. (Moscow, ITEP) ; Demidova, E.V. (Moscow, ITEP) ; Starostin, A.S. (Moscow, ITEP) ; Brudanin, V.B. (Dubna, JINR) ; Egorov, V.G. (Dubna, JINR) ; Medvedev, D.V. (Dubna, JINR) ; Shirchenko, M.V. (Dubna, JINR) ; Vylov, Ts. (Dubna, JINR)

Pages: 4

Abstract: The result of the 3-year neutrino magnetic moment measurement at the Kalinin Nuclear Power Plant 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 used in the spectrometer. The antineutrino flux is 2.7E13 1/scm/s. The differential method is used to extract (nu-e) electromagnetic scattering events. The scattered electron spectra taken in 5184+6798 and 1853+1021 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment < 3.2E-11 Bohr magneton at 90% CL is derived from the data processing.

Web-Page: http://inspirebeta.net/record/822667/files/GEMMA_F1.png; http://inspirebeta.net/record/822667/files/GEMMA_F2.png; http://inspirebeta.net/record/822667/files/GEMMA_F3.png; http://inspirebeta.net/record/822667/files/GEMMA_F4.png

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 Record created 2010-10-29, last modified 2014-01-30


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