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DOI | 10.1038/nature25009 |
Observation of two-neutrino double electron capture in Xe-124 with XENON1T | |
Aprile, E.1; Aalbers, J.2,3,4; Agostini, F.5,6; Alfonsi, M.7; Althueser, L.8; Amaro, F. D.9; Anthony, M.1; Antochi, V. C.2; Arneodo, F.10; Baudis, L.11; Bauermeister, B.2; Benabderrahmane, L.10; Berger, T.12; Breur, P. A.3,4; Brown, A.11; Brown, A.3,4; Brown, E.12; Bruenner, S.13; Bruno, G.10; Budnik, R.14; Capelli, C.11; Cardoso, J. M. R.9; Cichon, D.13; Coderre, D.15; Colijn, A. P.3,4; Conrad, J.2; Cussonneau, J. P.16; Decowski, M. P.3,4; de Perio, P.1; Di Gangi, P.5,6; Di Giovanni, A.10; Diglio, S.16; Elykov, A.15; Eurin, G.13; Fei, J.17; Ferella, A. D.2; Fieguth, A.8; Fulgione, W.18,19,20,21; Rosso, A. Gallo18,19; Galloway, M.11; Gao, F.1; Garbini, M.5,6; Grandi, L.22,23; Greene, Z.1; Hasterok, C.13; Hogenbirk, E.3,4; Howlett, J.1; Iacovacci, M.24,25; Itay, R.14; Joerg, F.13; Kaminsky, B.15; Kazama, S.11; Kish, A.11; Koltman, G.14; Kopec, A.26; Landsman, H.14; Lang, R. F.26; Levinson, L.14; Lin, Q.1; Lindemann, S.15; Lindner, M.13; Lombardi, F.17; Lopes, J. A. M.9; Fune, E. Lopez27; Macolino, C.28; Mahlstedt, J.2; Manfredini, A.11,14; Marignetti, F.24,25; Undagoitia, T. Marrodan13; Masbou, J.16; Masson, D.26; Mastroianni, S.24,25; Messina, M.10; Micheneau, K.16; Miller, K.22,23; Molinario, A.18,19; Mora, K.2; Murra, M.8; Naganoma, J.18,19,29; Ni, K.17; Oberlack, U.7; Odgers, K.12; Pelssers, B.2; Peres, R.9,11; Piastra, F.11; Pienaar, J.22,23; Pizzella, V.13; Plante, G.1; Podviianiuk, R.18,19; Priel, N.14; Qiu, H.14; Garcia, D. Ramirez15; Reichard, S.11; Riedel, B.22,23; Rizzo, A.1; Rocchetti, A.15; Rupp, N.13; dos Santos, J. M. F.9; Sartorelli, G.5,6; Sarcevic, N.15; Scheibelhut, M.7; Schindler, S.7; Schreiner, J.13; Schulte, D.8; Schumann, M.15; Lavina, L. Scotto27; Selvi, M.5,6; Shagin, P.29; Shockley, E.22,23; Silva, M.9; Simgen, H.13; Therreau, C.16; Thers, D.16; Toschi, F.15; Trinchero, G.20,21; Tunnell, C.22,23,29; Upole, N.22,23; Vargas, M.8; Wack, O.13; Wang, H.30; Wang, Z.18,19; Wei, Y.17; Weinheimer, C.8; Wenz, D.7; Wittweg, C.8; Wulf, J.11; Ye, J.17; Zhang, Y.1; Zhu, T.1; Zopounidis, J. P.27 | |
2019-04-25 | |
发表期刊 | NATURE |
ISSN | 0028-0836 |
EISSN | 1476-4687 |
出版年 | 2019 |
卷号 | 568期号:7753页码:532-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Sweden; Netherlands; Italy; Germany; Portugal; U Arab Emirates; Switzerland; Israel; France |
英文摘要 | Two-neutrino double electron capture (2 nu ECEC) is a second-order weak-interaction process with a predicted half-life that surpasses the age of the Universe by many orders of magnitude(1). Until now, indications of 2 nu ECEC decays have only been seen for two isotopes(2-5), Kr-78 and Ba-130, and instruments with very low background levels are needed to detect them directly with high statistical significance(6,7). The 2 nu ECEC half-life is an important observable for nuclear structure models(8-14) and its measurement represents a meaningful step in the search for neutrinoless double electron capture-the detection of which would establish the Majorana nature of the neutrino and would give access to the absolute neutrino mass(15-17). Here we report the direct observation of 2 nu ECEC in Xe-124 with the XENON1T dark-matter detector. The significance of the signal is 4.4 standard deviations and the corresponding half-life of 1.8 x 10(22) years (statistical uncertainty, 0.5 x 10(22) years; systematic uncertainty, 0.1 x 10(22) years) is the longest measured directly so far. This study demonstrates that the low background and large target mass of xenon-based dark-matter detectors make them well suited for measuring rare processes and highlights the broad physics reach of larger next-generation experiments(18-20). |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465594200047 |
WOS关键词 | DOUBLE-BETA-DECAY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/202835 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA; 2.Stockholm Univ, Dept Phys, Oskar Klein Ctr, AlbaNova, Stockholm, Sweden; 3.Nikhef, Sci Pk, Amsterdam, Netherlands; 4.Univ Amsterdam, Sci Pk, Amsterdam, Netherlands; 5.Univ Bologna, Dept Phys & Astron, Bologna, Italy; 6.INFN Bologna, Bologna, Italy; 7.Johannes Gutenberg Univ Mainz, Inst Phys & Exzellenzcluster PRISMA, Mainz, Germany; 8.Westfalische Wilhelms Univ Munster, Inst Kernphys, Munster, Germany; 9.Univ Coimbra, Dept Phys, LIBPhys, Coimbra, Portugal; 10.New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates; 11.Univ Zurich, Phys Inst, Zurich, Switzerland; 12.Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY USA; 13.Max Planck Inst Kernphys, Heidelberg, Germany; 14.Weizmann Inst Sci, Dept Particle Phys & Astrophys, Rehovot, Israel; 15.Univ Freiburg, Phys Inst, Freiburg, Germany; 16.Univ Nantes, SUBATECH, IMT Atlantique, CNRS,IN2P3, Nantes, France; 17.Univ Calif San Diego, Dept Phys, San Diego, CA 92103 USA; 18.INFN, Lab Nazl Gran Sasso, Laquila, Italy; 19.Gran Sasso Sci Inst, Laquila, Italy; 20.INFN Torino, Turin, Italy; 21.Osservatorio Astrofis Torino, Turin, Italy; 22.Univ Chicago, Dept Phys, Chicago, IL 60637 USA; 23.Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA; 24.Univ Napoli, Dept Phys Ettore Pancini, Naples, Italy; 25.INFN Napoli, Naples, Italy; 26.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA; 27.Univ Paris Diderot, Sorbonne Univ, LPNHE, CNRS,IN2P3, Paris, France; 28.Univ Paris Saclay, Univ Paris Sud, LAL, CNRS,IN2P3, Orsay, France; 29.Rice Univ, Dept Phys & Astron, Houston, TX USA; 30.Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Aprile, E.,Aalbers, J.,Agostini, F.,et al. Observation of two-neutrino double electron capture in Xe-124 with XENON1T[J]. NATURE,2019,568(7753):532-+. |
APA | Aprile, E..,Aalbers, J..,Agostini, F..,Alfonsi, M..,Althueser, L..,...&Zopounidis, J. P..(2019).Observation of two-neutrino double electron capture in Xe-124 with XENON1T.NATURE,568(7753),532-+. |
MLA | Aprile, E.,et al."Observation of two-neutrino double electron capture in Xe-124 with XENON1T".NATURE 568.7753(2019):532-+. |
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