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VOLUME 55 (1992) | ISSUE 4 | PAGE 212
Limitations on the magnetic moment and charge radius of the electron antineutrino
An elastic scattering of an antineutrino by an electron has been observed in the flux of antineutrinos from a power reactor. A 103-kg detector of a fluoroorganic scintillator was used. The cross section for (ve e) scattering was measured for energies of the recoil electron in the interval 3150-5175 keV. The result is σ — (4.5 + 2.4) Χ 10-46 cmVfission. Limitations are found on the magnetic moment ( μν<2.4χ 10~10μΒ) and the charge radius (|r|<2.7X 10"16 cm) of the electron neutrino at a 90% confidence level.