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The first result of the neutrino magnetic moment measurement in the
GEMMA experiment | | A.G. Beda
; V.B. Brudanin
; E.V. Demidova
; V.G. Egorov
; M.G. Gavrilov
; M.V. Shirchenko
; A.S. Starostin
; Ts. Vylov
; | | Date: |
31 May 2007 | | Subject: | High Energy Physics - Experiment (hep-ex) | | 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 $2.73 imes 10^{13}
u_e /
cm^2 / s$. The differential method is used to extract the $
u$-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 $mu_
u < 5.8 imes 10^{-11}$ Bohr magnetons
at 90{%} CL is derived from the data processing. | | Source: | arXiv, arxiv.0705.4576 | | Services: | Forum | Review | PDF | Favorites | |
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