First results of the search for neutrinoless double-beta decay with the NEMO 3 detector.-猫眼课题宝

DOI：

10.1103/physrevlett.95.182302

发表时间：

2005-07

期刊：

Physical review letters

影响因子：

8.6

通讯作者：

中科院分区：

物理与天体物理1区

文献类型：

作者：

R. Arnold;C. Augier;J. Baker;A. Barabash;G. Broudin;V. Brudanin;A. Caffrey;E. Caurier;V. Egorov;K. Errahmane;A. Etienvre;J. Guyonnet;F. Hubert;P. Hubert;C. Jollet;S. Jullian;O. Kochetov;V. Kovalenko;S. Konovalov;D. Lalanne;F. Leccia;C. Longuemare;G. Lutter;C. Marquet;F. Mauger;F. Nowacki;H. Ohsumi;F. Piquemal;J. Reyss;R. Saakyan;X. Sarazin;L. Simard;F. Šimkovic;Y. Shitov;A. Smolnikov;L. Stekl;J. Suhonen;C. Sutton;G. Szklarz;J. Thomas;V. Timkin;V. Tretyak;V. Umatov;L. Vála;I. Vanushin;V. Vasilyev;V. Vorobel;T. Vylov

NEMO 3探测器自2003年2月以来一直在Fréjus地下实验室运行，致力于寻找无中微子双β衰变（β β 0 v）。两个中微子双β衰变（β β 2 v）的半衰期已被测量为100 Mo和82 Se。从2003年2月到2004年9月（第一阶段），经过389天的有效数据收集，没有从大约7公斤的100钼和大约1公斤的82硒中发现无中微子双β衰变的证据。相应的极限是100 Mo的T1/2（β β 0 v）> 4.6 × 10（23）年，82 Se（90% C.L.）的T1/2（β β 0 v）> 1.0 × 10（23）年。根据核矩阵元的计算，100 Mo的有效马约拉纳中微子质量的极限为< 0.7-2.8 e/v，82 Se的有效马约拉纳中微子质量的极限为< 1.7-4.9 eV。

The NEMO 3 detector, which has been operating in the Fréjus underground laboratory since February 2003, is devoted to the search for neutrinoless double-beta decay (beta beta 0v). The half-lives of the two neutrino double-beta decay (beta beta 2v) have been measured for 100Mo and 82Se. After 389 effective days of data collection from February 2003 until September 2004 (phase I), no evidence for neutrinoless double-beta decay was found from approximately 7 kg of 100Mo and approximately 1 kg of 82Se. The corresponding limits are T1/2(beta beta0v) > 4.6 x 10(23) yr for 100Mo and T1/2(beta beta 0v) > 1.0 x 10(23) yr for 82Se (90% C.L.). Depending on the nuclear matrix element calculation, the limits for the effective Majorana neutrino mass are < 0.7-2.8 e/v for 100Mo and < 1.7-4.9 eV for 82Se.

First results of the search for neutrinoless double-beta decay with the NEMO 3 detector.

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