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First result for the neutrino magnetic moment from measurements with the GEMMA spectrometer

Authors :
A. S. Starostin
M. G. Gavrilov
E. V. Demidova
Ts. Vylov
M. Shirchenko
V.B. Brudanin
A. G. Beda
V. G. Egorov
Source :
Physics of Atomic Nuclei. 70:1873-1884
Publication Year :
2007
Publisher :
Pleiades Publishing Ltd, 2007.

Abstract

The first result of the neutrino magnetic moment measurement at the Kalininskaya Nuclear Power Plant (KNPP) with the GEMMA spectrometer is presented. An antineutrino-electron scattering is investigated. A high-purity germanium detector of 1.5 kg placed 13.9 m away from the 3 GW reactor core is used in the spectrometer. The antineutrino flux is $2.73\times 10^{13} \nu_e / cm^2 / s$. The differential method is used to extract the $\nu$-e electromagnetic scattering events. The scattered electron spectra taken in 6200 and 2064 hours for the reactor ON and OFF periods are compared. The upper limit for the neutrino magnetic moment $\mu_\nu < 5.8\times 10^{-11}$ Bohr magnetons at 90{%} CL is derived from the data processing.

Details

ISSN :
1562692X and 10637788
Volume :
70
Database :
OpenAIRE
Journal :
Physics of Atomic Nuclei
Accession number :
edsair.doi...........14215345ea98dfe3632f4a792dfa4cff
Full Text :
https://doi.org/10.1134/s1063778807110063