摘要
We present the result of an experimental search for a heavy neutrino admixture in the electron capture process.The 95%confidence level upper limits from 0.02 to 0.04 are set for the mixing strength of heavy neutrinos in the neutrino mass range of 30keV to 90keV.
作者
唐孝威
刘年庆
TANG Xiaowei;LIU Nianqing(Institute of High Energy Physics,Academia Sinica,Beijing)
