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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