Eur Phys J C (2004) 33: s820-s822
https://doi.org/10.1140/epjcd/s2003-03-907-4

PS09 Neutrino Properties and Oscillations

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

Institute of Physics, Academia Sinica, Taipei 11529, Taiwan

Received: 5 August 2003
Accepted: 27 August 2003
Published online: 19 August 2003

Abstract

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 at 90(68)% confidence level were derived. Indirect bounds of the radiative lifetime of m_ν ³   τ_ν > 2.8(4.8) × 10¹⁸   eV³ s can be inferred. The present status and future plans are discussed.

PACS: 14.60.Lm Neutrino Properties — 13.40.Em Electric and Magnetic Moments