New experimental results on double beta decay of 130Te

被引:92
作者
Alessandrello, A
Brofferio, C
Cremonesi, O
Fiorini, E
Giuliani, A
Nucciotti, A
Pavan, M
Pessina, G
Pirro, S
Previtali, E
Vanzini, M
Zanotti, L
Bucci, C
Pobes, C
机构
[1] Univ Milan, Dipartimento Fis G Occhialini, I-20133 Milan, Italy
[2] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[3] Lab Nazl Gran Sasso, I-67010 Assergi, Aquila, Italy
关键词
double beta decay; neutrino mass;
D O I
10.1016/S0370-2693(00)00747-4
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
New results are presented of a search for double beta decay of Te isotopes carried out, using the bolometric technique, with an array of 20 natural tellurite crystals with a total cryogenic mass of similar to 6.8 kilograms. The array has been run at a temperature around 10 mK in the Gran Sasso Underground Laboratory. No evidence has been found for neutrinoless double beta decay of Te-128 and Te-130 and upper limits of 8.6 x 10(22) and 1.44 x 10(23) years, respectively, have been achieved at the 90% confidence level. From the latter we obtain limits on the lepton non-conserving parameters which are the most restrictive ones in direct experiments after those on Ge-76 according to theoretical calculations. Results on two neutrino and majoron mediated decays are also presented and discussed with respect to those obtained for the same nuclei in geochemical experiments. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:13 / 21
页数:9
相关论文
共 42 条
[31]  
Lee J.-S., COMMUNICATION
[32]   GEOCHEMICAL MEASUREMENTS OF DOUBLE-BETA DECAY [J].
MANUEL, OK .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1991, 17 :S221-S229
[33]  
MORALES A, 1998, NUCL PHYS B, P235
[34]  
PESSINA G, IN PRESS NUCL INSTRU
[35]  
PRESS WH, 1991, NUMERICAL RECIPES C, P434
[36]   CALCULATION OF 2-NU AND 0-NU DOUBLE-BETA DECAY-RATES [J].
STAUDT, A ;
MUTO, K ;
KLAPDORKLEINGROTHAUS, HV .
EUROPHYSICS LETTERS, 1990, 13 (01) :31-36
[37]   Weak-interaction and nuclear-structure aspects of nuclear double beta decay [J].
Suhonen, J ;
Civitarese, O .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1998, 300 (3-4) :123-214
[38]   Half-life of Te-130 double-beta decay measured with geologically qualified samples [J].
Takaoka, N ;
Motomura, Y ;
Nagao, K .
PHYSICAL REVIEW C, 1996, 53 (04) :1557-1561
[39]   TABLES OF DOUBLE-BETA DECAY DATA [J].
TRETYAK, VI ;
ZDESENKO, YG .
ATOMIC DATA AND NUCLEAR DATA TABLES, 1995, 61 (01) :43-90
[40]   Cryogenic particle detectors [J].
Twerenbold, D .
REPORTS ON PROGRESS IN PHYSICS, 1996, 59 (03) :349-426