使用NEMO-3探测器寻找¹⁵⁰Nd的无中微子双β衰变。

Search for Neutrinoless Quadruple-β Decay of ^{150}Nd with the NEMO-3 Detector.

作者信息

Arnold R, Augier C, Barabash A S, Basharina-Freshville A, Blondel S, Blot S, Bongrand M, Boursette D, Brudanin V, Busto J, Caffrey A J, Calvez S, Cascella M, Cerna C, Cesar J P, Chapon A, Chauveau E, Chopra A, Dawson L, Duchesneau D, Durand D, Egorov V, Eurin G, Evans J J, Fajt L, Filosofov D, Flack R, Garrido X, Gómez H, Guillon B, Guzowski P, Hodák R, Huber A, Hubert P, Hugon C, Jullian S, Klimenko A, Kochetov O, Konovalov S I, Kovalenko V, Lalanne D, Lang K, Lemière Y, Le Noblet T, Liptak Z, Liu X R, Loaiza P, Lutter G, Macko M, Macolino C, Mamedov F, Marquet C, Mauger F, Morgan B, Mott J, Nemchenok I, Nomachi M, Nova F, Nowacki F, Ohsumi H, Patrick C, Pahlka R B, Perrot F, Piquemal F, Povinec P, Přidal P, Ramachers Y A, Remoto A, Reyss J L, Riddle C L, Rukhadze E, Saakyan R, Salazar R, Sarazin X, Shitov Yu, Simard L, Šimkovic F, Smetana A, Smolek K, Smolnikov A, Söldner-Rembold S, Soulé B, Štefánik D, Štekl I, Suhonen J, Sutton C S, Szklarz G, Thomas J, Timkin V, Torre S, Tretyak Vl I, Tretyak V I, Umatov V I, Vanushin I, Vilela C, Vorobel V, Waters D, Xie F, Žukauskas A

机构信息

IPHC, ULP, CNRS/IN2P3, F-67037 Strasbourg, France.

LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, F-91405 Orsay, France.

出版信息

Phys Rev Lett. 2017 Jul 28;119(4):041801. doi: 10.1103/PhysRevLett.119.041801. Epub 2017 Jul 24.

DOI:10.1103/PhysRevLett.119.041801

PMID:29341770

Abstract

We report the results of a first experimental search for lepton number violation by four units in the neutrinoless quadruple-β decay of ^{150}Nd using a total exposure of 0.19 kg yr recorded with the NEMO-3 detector at the Modane Underground Laboratory. We find no evidence of this decay and set lower limits on the half-life in the range T_{1/2}>(1.1-3.2)×10^{21} yr at the 90% C.L., depending on the model used for the kinematic distributions of the emitted electrons.

摘要

我们报告了在莫达讷地下实验室使用NEMO-3探测器记录的0.19千克·年的总曝光量，对¹⁵⁰Nd无中微子四体β衰变中轻子数违反四个单位的首次实验搜索结果。我们没有发现这种衰变的证据，并根据所发射电子的运动学分布模型，在90%置信水平下设定了半衰期下限，范围为T₁/₂ >(1.1 - 3.2)×10²¹年。