Search for two neutrino double electron capture of(124)Xe and(126)Xe in the full exposure of the LUX detector



Akerib, DS, Alsum, S, Araujo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM
et al (show 88 more authors) (2020) Search for two neutrino double electron capture of(124)Xe and(126)Xe in the full exposure of the LUX detector. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 47 (10). p. 105105.

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Abstract

Two-neutrino double electron capture is a process allowed in the standard model of particle physics. This rare decay has been observed in 78Kr, 130Ba and more recently in 124Xe. In this publication we report on the search for this process in 124Xe and 126Xe using the full exposure of the large underground xenon (LUX) experiment, in a total of 27769.5 kg-days. No evidence of a signal was observed, allowing us to set 90% C.L. lower limits for the half-lives of these decays of 2.0 × 1021 years for 124Xe and 1.9 × 1021 years for 126Xe.

Item Type: Article
Uncontrolled Keywords: rare decays, double electron capture, dark matter detectors, xenon detectors
Depositing User: Symplectic Admin
Date Deposited: 19 Nov 2020 09:00
Last Modified: 18 Jan 2023 23:20
DOI: 10.1088/1361-6471/ab9c2d
Open Access URL: https://arxiv.org/pdf/1912.02742.pdf
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3107493