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Observation of two-neutrino double electron capture in 124Xe with XENON1T
- Aprile, E. (author)
-
- Aalbers, Jelle (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Nikhef and the University of Amsterdam, The Netherlands
- Agostini, F. (author)
- show more...
- Alfonsi, M. (author)
- Althueser, L. (author)
- Amaro, F. D. (author)
- Anthony, M. (author)
- Arneodo, F. (author)
- Baudis, L. (author)
- Benabderrahmane, L. (author)
- Berger, T. (author)
- Breur, P. A. (author)
- Brown, A. (author)
- Brown, A. (author)
- Brown, E. (author)
- Bruenner, S. (author)
- Bruno, G. (author)
- Budnik, R. (author)
- Capelli, C. (author)
- Cardoso, J. M. R. (author)
- Cichon, D. (author)
- Coderre, D. (author)
- Colijn, A. P. (author)
- Cussonneau, J. P. (author)
- Decowski, M. P. (author)
- de Perio, P. (author)
- Di Gangi, P. (author)
- Di Giovanni, A. (author)
- Diglio, S. (author)
- Elykov, A. (author)
- Eurin, G. (author)
- Fei, J. (author)
- Fieguth, A. (author)
- Fulgione, W. (author)
- Rosso, A. Gallo (author)
- Galloway, M. (author)
- Gao, F. (author)
- Garbini, M. (author)
- Grandi, L. (author)
- Greene, Z. (author)
- Hasterok, C. (author)
- Hogenbirk, E. (author)
- Howlett, J. (author)
- Iacovacci, M. (author)
- Itay, R. (author)
- Joerg, F. (author)
- Kaminsky, B. (author)
- Kazama, S. (author)
- Kish, A. (author)
- Koltman, G. (author)
- Kopec, A. (author)
- Landsman, H. (author)
- Lang, R. F. (author)
- Levinson, L. (author)
- Lin, Q. (author)
- Lindemann, S. (author)
- Lindner, M. (author)
- Lombardi, F. (author)
- Lopes, J. A. M. (author)
- Fune, E. Lopez (author)
- Macolino, C. (author)
- Manfredini, A. (author)
- Marignetti, F. (author)
- Undagoitia, T. Marrodan (author)
- Masbou, J. (author)
- Masson, D. (author)
- Mastroianni, S. (author)
- Messina, M. (author)
- Micheneau, K. (author)
- Miller, K. (author)
- Molinario, A. (author)
- Murra, M. (author)
- Naganoma, J. (author)
- Ni, K. (author)
- Oberlack, U. (author)
- Odgers, K. (author)
- Peres, R. (author)
- Piastra, F. (author)
- Pienaar, J. (author)
- Pizzella, V. (author)
- Plante, G. (author)
- Podviianiuk, R. (author)
- Priel, N. (author)
- Qiu, H. (author)
- Garcia, D. Ramirez (author)
- Reichard, S. (author)
- Riedel, B. (author)
- Rizzo, A. (author)
- Rocchetti, A. (author)
- Rupp, N. (author)
- dos Santos, J. M. F. (author)
- Sartorelli, G. (author)
- Sarcevic, N. (author)
- Scheibelhut, M. (author)
- Schindler, S. (author)
- Schreiner, J. (author)
- Schulte, D. (author)
- Schumann, M. (author)
- Lavina, L. Scotto (author)
- Selvi, M. (author)
- Shagin, P. (author)
- Shockley, E. (author)
- Silva, M. (author)
- Simgen, H. (author)
- Therreau, C. (author)
- Thers, D. (author)
- Toschi, F. (author)
- Trinchero, G. (author)
- Tunnell, C. (author)
- Upole, N. (author)
- Vargas, M. (author)
- Wack, O. (author)
- Wang, H. (author)
- Wang, Z. (author)
- Wei, Y. (author)
- Weinheimer, C. (author)
- Wenz, D. (author)
- Wittweg, C. (author)
- Wulf, J. (author)
- Ye, J. (author)
- Zhang, Y. (author)
- Zhu, T. (author)
- Zopounidis, J. P. (author)
- show less...
- (creator_code:org_t)
- 2019-04-24
- 2019
- English.
- In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 568:7753, s. 532-535
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Two-neutrino double electron capture (2νECEC) is a second-order weak-interaction process with a predicted half-life that surpasses the age of the Universe by many orders of magnitude. Until now, indications of 2νECEC decays have only been seen for two isotopes, 78Kr and 130Ba, and instruments with very low background levels are needed to detect them directly with high statistical significance. The 2νECEC half-life is an important observable for nuclear structure models 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. Here we report the direct observation of 2νECEC in 124Xe with the XENON1T dark-matter detector. The significance of the signal is 4.4 standard deviations and the corresponding half-life of 1.8 × 1022 years (statistical uncertainty, 0.5 × 1022 years; systematic uncertainty, 0.1 × 1022 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.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Aprile, E.
- Aalbers, Jelle
- Agostini, F.
- Alfonsi, M.
- Althueser, L.
- Amaro, F. D.
- show more...
- Anthony, M.
- Antochi, Vasile ...
- Arneodo, F.
- Baudis, L.
- Bauermeister, Bo ...
- Benabderrahmane, ...
- Berger, T.
- Breur, P. A.
- Brown, A.
- Brown, E.
- Bruenner, S.
- Bruno, G.
- Budnik, R.
- Capelli, C.
- Cardoso, J. M. R ...
- Cichon, D.
- Coderre, D.
- Colijn, A. P.
- Conrad, Jan
- Cussonneau, J. P ...
- Decowski, M. P.
- de Perio, P.
- Di Gangi, P.
- Di Giovanni, A.
- Diglio, S.
- Elykov, A.
- Eurin, G.
- Fei, J.
- Ferella, Alfredo ...
- Fieguth, A.
- Fulgione, W.
- Rosso, A. Gallo
- Galloway, M.
- Gao, F.
- Garbini, M.
- Grandi, L.
- Greene, Z.
- Hasterok, C.
- Hogenbirk, E.
- Howlett, J.
- Iacovacci, M.
- Itay, R.
- Joerg, F.
- Kaminsky, B.
- Kazama, S.
- Kish, A.
- Koltman, G.
- Kopec, A.
- Landsman, H.
- Lang, R. F.
- Levinson, L.
- Lin, Q.
- Lindemann, S.
- Lindner, M.
- Lombardi, F.
- Lopes, J. A. M.
- Fune, E. Lopez
- Macolino, C.
- Mahlstedt, Jörn
- Manfredini, A.
- Marignetti, F.
- Undagoitia, T. M ...
- Masbou, J.
- Masson, D.
- Mastroianni, S.
- Messina, M.
- Micheneau, K.
- Miller, K.
- Molinario, A.
- Morå, Knut
- Murra, M.
- Naganoma, J.
- Ni, K.
- Oberlack, U.
- Odgers, K.
- Pelssers, Bart
- Peres, R.
- Piastra, F.
- Pienaar, J.
- Pizzella, V.
- Plante, G.
- Podviianiuk, R.
- Priel, N.
- Qiu, H.
- Garcia, D. Ramir ...
- Reichard, S.
- Riedel, B.
- Rizzo, A.
- Rocchetti, A.
- Rupp, N.
- dos Santos, J. M ...
- Sartorelli, G.
- Sarcevic, N.
- Scheibelhut, M.
- Schindler, S.
- Schreiner, J.
- Schulte, D.
- Schumann, M.
- Lavina, L. Scott ...
- Selvi, M.
- Shagin, P.
- Shockley, E.
- Silva, M.
- Simgen, H.
- Therreau, C.
- Thers, D.
- Toschi, F.
- Trinchero, G.
- Tunnell, C.
- Upole, N.
- Vargas, M.
- Wack, O.
- Wang, H.
- Wang, Z.
- Wei, Y.
- Weinheimer, C.
- Wenz, D.
- Wittweg, C.
- Wulf, J.
- Ye, J.
- Zhang, Y.
- Zhu, T.
- Zopounidis, J. P ...
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
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- Nature
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- Stockholm University
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