POSSIBILITY OF OBSERVING MASSIVE NEUTRINO ADMIXTURES IN NUCLEAR ORBITAL ELECTRON-CAPTURE RATES

被引:6
作者
HARTMANN, FX
机构
[1] Chemistry Department, Brookhaven National Laboratory, Upton
来源
PHYSICAL REVIEW C | 1992年 / 45卷 / 03期
关键词
D O I
10.1103/PhysRevC.45.R900
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The unusual case in nuclear orbital electron capture whereby either a neutrino in a weak interaction eigenstate or in a mass eigenstate is emitted by the same nucleus is examined. The case of the low-energy Q value nuclear electron capture decays is considered where, for at least one electronic shell, the emission of a weak eigenstate neutrino having an admixture of a second mass eigenstate neutrino (with mass in the keV/c2 range) is energetically prohibited. This feature, in particular, opens the possibility for a new approach to searching for massive neutrino admixtures using relative electron capture rates. Five candidates are specifically identified, of which one, Tb-157, is conceivably of immediate interest to the 17 KeV/c2 neutrino mass question. Finally experimental prospects and limitations are described.
引用
收藏
页码:R900 / R903
页数:4
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