title: Limit on the electron neutrino magnetic moment from the kuo-sheng reactor neutrino experiment.
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(-1) keV(-1) day(-1) at 12-60 keV were achieved. Based on 4712 and 1250 h of reactor ON and OFF data, respectively, the limit on the neutrino magnetic moment of mu(nu;(e))<1.3x10(-10)mu(B) at 90% confidence level was derived. An indirect bound of the nu;(e) radiative lifetime of m(3)(nu)tau(nu)>2.8x10(18) eV(3) s can be inferred.
authors.affiliation: Institute of Physics, Academia Sinica, Taipei 115, Taiwan and Department of Physics, National Taiwan University, Taipei 106, Taiwan.
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authors.lastname: Li
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authors.lastname: Wong
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authors.lastname: Chang
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authors.lastname: Lai
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authors.lastname: Liu
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authors.lastname: Sheng
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authors.lastname: Singh
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authors.lastname: Su
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authors.initials: PK
authors.lastname: Teng
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authors.lastname: Tong
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authors.initials: SC
authors.lastname: Wang
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authors.lastname: Yeh
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authors.lastname: Yue
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authors.initials: ZY
authors.lastname: Zhou
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authors.initials: BA
authors.lastname: Zhuang