A SEARCH FOR 2 NEUTRINO AND NEUTRINOLESS DOUBLE BETA-DECAY OF XE-136 IN THE GRAN-SASSO UNDERGROUND LABORATORY

被引：32

作者：

BELLOTTI, E ^{[1
]}

CREMONESI, O ^{[1
]}

FIORINI, E ^{[1
]}

GERVASIO, G ^{[1
]}

RAGAZZI, S ^{[1
]}

ROSSI, L ^{[1
]}

SVERZELLATI, PP ^{[1
]}

SZARKA, J ^{[1
]}

TABARELLI DE FATIS, T ^{[1
]}

ZANOTTI, L ^{[1
]}

机构：

[1] NATL INST NUCL PHYS, MILAN, ITALY

来源：

PHYSICS LETTERS B | 1991年 / 266卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90767-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for two neutrino and neutrinoless double beta decay of Xe-136 with a multicell proportional counter in the Gran Sasso underground laboratory. The search for the two neutrino channel has been based on the comparison of spectra obtained in runs with natural and enriched xenon and with xenon which had been specifically cleaned with an ultracentrifuge. Special dedicated runs have been carried out with the various gases to evaluate the background from the rate of alpha-particles. No evidence has been found for two neutrino or neutrinoless double beta decay. The corresponding lower limits on the lifetime are evaluated with a new statistical procedure.

引用

页码：193 / 200

页数：8

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