Neutrino magnetic moment results at the Kuo-Sheng Nuclear Power Plant.

A search of neutrino magnetic moment was carried out at the Kuo-Sheng Nuclear Power Station at a distance of 28 m from the 2.9 GW reactor core. With a high purity germanium detector of mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, a detection threshold of 5 keV and a background level of 1 kg-1keV-1day-1 at 12-60 keV were achieved. Based on 4712 and 1250 hours of Reactor ON and OFF data, respectively, the limits on the neutrino magnetic moment of μ&vsline;e < 1.3(1.0) × 10-10 μB at 90(68)% confidence level were derived. Indirect bounds of the &?sline;e radiative lifetime of mv³ τv > 2.8(4.8) × 1018 eV³s can be inferred. The present status and future plans are discussed. [ABSTRACT FROM AUTHOR]