Search for two-neutrino double electron capture of $^{124}$Xe with XENON100
- Aprile, E.
- Aalbers, J.
- Agostini, F.
- Alfonsi, M.
- Amaro, F.D.
- Anthony, M.
- Arneodo, F.
- Barrow, P.
- Baudis, L.
- Bauermeister, B.
- Benabderrahmane, M.L.
- Berger, T.
- Breur, P.A.
- Brown, A.
- Brown, E.
- Bruenner, S.
- Bruno, G.
- Budnik, R.
- Bütikofer, L.
- Calvén, J.
- Cardoso, J.M.R.
- Cervantes, M.
- Cichon, D.
- Coderre, D.
- Colijn, A.P.
- Conrad, J.
- Cussonneau, Jean-Pierre
- Decowski, M.P.
- De Perio, P.
- Di Gangi, P.
- Di Giovanni, A.
- Diglio, Sara
- Duchovni, E.
- Fei, J.
- Ferella, A.D.
- Fieguth, A.
- Franco, D.
- Fulgione, W.
- Gallo Rosso, A.
- Galloway, M.
- Gao, F.
- Garbini, M.
- Geis, C.
- Goetzke, L.W.
- Greene, Z.
- Grignon, C.
- Hasterok, C.
- Hogenbirk, E.
- Itay, R.
- Kaminsky, B.
- Kessler, G.
- Kish, A.
- Landsman, H.
- Lang, R.F.
- Lellouch, D.
- Levinson, L.
- Le Calloch, M.
- Levy, C.
- Lin, Q.
- Lindemann, S.
- Lindner, M.
- Lopes, J.A.M.
- Manfredini, A.
- Marrodán Undagoitia, T.
- Masbou, Julien
- Massoli, F.V.
- Masson, D.
- Mayani, D.
- Meng, Y.
- Messina, M.
- Micheneau, K.
- Miguez, B.
- Molinario, A.
- Murra, M.
- Naganoma, J.
- Ni, K.
- Oberlack, U.
- Orrigo, S.E.A.
- Pakarha, P.
- Pelssers, B.
- Persiani, R.
- Piastra, F.
- Pienaar, J.
- Piro, M.-C.
- Plante, G.
- Priel, N.
- Rauch, L.
- Reichard, S.
- Reuter, C.
- Rizzo, A.
- Rosendahl, S.
- Rupp, N.
- Dos Santos, J.M.F.
- Sartorelli, G.
- Scheibelhut, M.
- Schindler, S.
- Schreiner, J.
- Schumann, M.
- Scotto Lavina, L.
- Selvi, M.
- Shagin, P.
- Silva, M.
- Simgen, H.
- v.Sivers, M.
- Stein, A.
- Thers, Dominique
- Tiseni, A.
- Trinchero, G.
- Tunnell, C.D.
- Wall, R.
- Wang, H.
- Weber, M.
- Wei, Y.
- Weinheimer, C.
- Wulf, J.
- Zhang, Y.
DOIAbstract
International audienceTwo-neutrino double electron capture is a rare nuclear decay where two electrons are simultaneously captured from the atomic shell. For Xe124 this process has not yet been observed and its detection would provide a new reference for nuclear matrix element calculations. We have conducted a search for two-neutrino double electron capture from the K shell of Xe124 using 7636 kgd of data from the XENON100 dark matter detector. Using a Bayesian analysis we observed no significant excess above background, leading to a lower 90% credibility limit on the half-life T1/2>6.5×1020 yr. We have also evaluated the sensitivity of the XENON1T experiment, which is currently being commissioned, and found a sensitivity of T1/2>6.1×1022 y...
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