A NEW SEARCH FOR NEUTRINOLESS BETA-BETA-DECAY WITH A THERMAL DETECTOR

被引：57

作者：

ALESSANDRELLO, A ^{[1
]}

BROFFERIO, C ^{[1
]}

CAMIN, DV ^{[1
]}

CREMONESI, O ^{[1
]}

FIORINI, E ^{[1
]}

GARCIA, E ^{[1
]}

GIULIANI, A ^{[1
]}

DEMARCILLAC, P ^{[1
]}

NUCCIOTTI, A ^{[1
]}

PAVAN, M ^{[1
]}

PESSINA, G ^{[1
]}

PREVITALI, E ^{[1
]}

ZANOTTI, L ^{[1
]}

机构：

[1] INFN, I-20133 MILAN, ITALY

来源：

PHYSICS LETTERS B | 1994年 / 335卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90388-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A 334 g TeO2 crystal has been operated at a temperature of around 10 mK for more than one year in a low intrinsic radioactivity dilution refrigerator installed in the Gran Sasso Underground Laboratory. From the spectrum collected in 9234 h of effective running time we improve our limit on neutrinoless double beta decay of Te-130 by an order of magnitude with respect to our previous experiment. It is the most stringent on this nucleus and excludes a large contribution of the neutrinoless mode to the rate of double beta decay found in geochemical experiments. Upper limits on the effective neutrino mass and on the contributions of right handed currents are given.

引用

页码：519 / 525

页数：7

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