SEARCH FOR A 17 KEV NEUTRINO IN THE ELECTRON-CAPTURE DECAY OF FE-55

被引：0

作者：

WIETFELDT, FE

CHAN, YD

DACRUZ, MTF

GARCIA, A

LARIMER, RM

LESKO, KT

NORMAN, EB

STOKSTAD, RG

ZLIMEN, I

机构：

[1] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720

[2] UNIV SAO PAULO,INST PHYS,SAO PAULO,BRAZIL

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 12期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a chemically purified sample of Fe-55 and a coaxial Ge detector, we collected a high-statistics internal-bremsstrahlung photon spectrum, and conducted a local search for departures from a smooth shape near the end point. We find no evidence for emission of a neutrino in the mass range 5-25 keV. In particular, a 17 keV neutrino with sin2 theta = 0.008 is excluded at the 7sigma level.

引用

页码：1759 / 1762

页数：4

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