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Measurement of the Spectral Shape of the beta-decay of 137Xe to the Ground State of 137Cs in EXO-200 and Comparison with Theory
S. Al Kharusi, G. Anton, I. Badhrees +105
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden non-unique -decay transition $^{137}\textrm{Xe}(7/2^-)\t…
Projected sensitivity of the LUX-ZEPLIN experiment to the decay of Xe
D. S. Akerib, C. W. Akerlof, A. Alqahtani +189
The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double beta decay search in parallel to the main science goal of discovering dark matter particle interactions. We report…
First Search for Lorentz and CPT Violation in Double Beta Decay with EXO-200
200 Collaboration, J. B. Albert, P. S. Barbeau +86
A search for Lorentz- and CPT-violating signals in the double beta decay spectrum of Xe has been performed using an exposure of 100 kgyr with the EXO-200 detector. N…
Cosmogenic Backgrounds to 0νββ in EXO-200
200 Collaboration, J. B. Albert, D. J. Auty +84
As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background m…
Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using EXO-200
J. B. Albert, D. J. Auty, P. S. Barbeau +82
Alpha decays in the EXO-200 detector are used to measure the fraction of charged and daughters created from alpha and beta decays, respectiv…
Search for Majorana neutrinos with the first two years of EXO-200 data
200 Collaboration, J. B. Albert, D. J. Auty +91
Many extensions of the Standard Model of particle physics suggest that neutrinos should be Majorana-type fermions, but this assumption is difficult to confirm. Observation of neutr…
An improved measurement of the 2νββ half-life of Xe-136 with EXO-200
J. B. Albert, M. Auger, D. J. Auty +94
We report on an improved measurement of the 2νββ half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimat…
Observation of Two-Neutrino Double-Beta Decay in Xe-136 with EXO-200
N. Ackerman, B. Aharmim, M. Auger +100
We report the observation of two-neutrino double-beta decay in Xe-136 with T_1/2 = 2.11 +- 0.04 (stat.) +- 0.21 (sys.) x 10^21 yr. This second order process, predicted by the Stand…