%0 Journal Article
%T Search for two-neutrino double electron capture of Xe-124 with XENON100
%A XENON Collaboration (Aprile, E. et al
%A Orrigo, S. E. A.
%J Physical Review C
%D 2017
%V 95
%N 2
%I Amer Physical Soc
%@ 2469-9985
%G English
%F XENONCollaborationAprile+Orrigo2017
%O WOS:000393744200001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2956), last updated on Thu, 16 Mar 2017 15:36:34 +0000
%X Two-neutrino double electron capture is a rare nuclear decay where two electrons are simultaneously captured from the atomic shell. For Xe-124 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 124Xe using 7636 kg d 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 T-1/2 > 6.5 x 10(20) yr. We have also evaluated the sensitivity of the XENON1T experiment, which is currently being commissioned, and found a sensitivity of T-1/2 > 6.1 x 10(22) yr after an exposure of 2 t yr.
%R 10.1103/PhysRevC.95.024605
%U http://arxiv.org/abs/1609.03354
%U https://doi.org/10.1103/PhysRevC.95.024605
%P 024605-6pp