TRACKING ELECTRONS FROM DOUBLE-BETA DECAY - HOW FAR CAN YOU PUSH THE TPC

被引：32

作者：

MOE, MK

NELSON, MA

VIENT, MA

机构：

[1] Physics Department, University of California, Irvine

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 32: NEUTRINOS IN COSMOLOGY, ASTRO, PARTICLE AND NUCLEAR PHYSICS | 1994年 / 32卷

关键词：

DOUBLE BETA DECAY; MO-100; ND-150; MAJORON; TPC;

D O I：

10.1016/0146-6410(94)90023-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New results are reported from time-projection-chamber measurements of the double beta decay of Mo-100 and Nd-150. A previously-observed high-energy anomaly has been eliminated by improved energy resolution. Kurie plots of the two-neutrino spectra show end-point energies close to the reported parent-daughter mass differences. The Nd-150 source has produced a new direct-counting 90% confidence neutrino-majoron coupling limit of < g(nu,chi) > < 7.0 x 10(-5). The strengths and weaknesses of the TPC, and the feasibility of a larger TPC for neutrinoless double beta decay are discussed.

引用

页码：247 / 260

页数：14

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