TY  - JOUR
AU  - XENON Collaboration (Aprile, E. et al
AU  - Orrigo, S. E. A.
PY  - 2017
DA  - 2017//
TI  - Search for two-neutrino double electron capture of Xe-124 with XENON100
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 024605
EP  - 6pp
VL  - 95
IS  - 2
PB  - Amer Physical Soc
AB  - 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.
SN  - 2469-9985
UR  - http://arxiv.org/abs/1609.03354
UR  - https://doi.org/10.1103/PhysRevC.95.024605
DO  - 10.1103/PhysRevC.95.024605
LA  - English
N1  - WOS:000393744200001
ID  - XENONCollaborationAprile+Orrigo2017
ER  -