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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/215201
Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model
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We study the two-neutrino double electron capture on 124Xe based on an effective theory (ET) and large-scale shell model calculations, two modern nuclear structure approaches that have been tested against Gamow-Teller and double-beta decay data. In the ET, the low-energy constants are fit to electron capture and transitions around xenon. For the nuclear shell model, we use an interaction in a large configuration space that reproduces the spectroscopy of nuclei in this mass region. For the dominant transition to the 124Te ground state, we find half-lives y for the ET and y for the shell model. The ET uncertainty leads to a half-life almost entirely consistent with present experimental limits and largely within the reach of ongoing experiments. The shell model half-life range overlaps with the ET, but extends less beyond current limits. Our findings thus suggest that the two-neutrino double electron capture on 124Xe has a good chance to be discovered by ongoing or future experiments. In addition, we present results for the two-neutrino double electron capture to excited states of 124Te.
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COELLO PÉREZ, E.a., MENÉNDEZ SÁNCHEZ, Javier, SCHWENK, A.. Two-neutrino double electron capture on 124Xe based on an effective theory and the nuclear shell model. _Physics Letters B_. 2019. Vol. 797, núm. 134885. [consulta: 28 de gener de 2026]. ISSN: 0370-2693. [Disponible a: https://hdl.handle.net/2445/215201]