Agostini, M;
Alexander, A;
Araujo, G;
Bakalyarov, AM;
Balata, M;
Barabanov, I;
Baudis, L;
... Veresnikova, A; + view all
(2022)
Search for exotic physics in double-β decays with GERDA Phase II.
Journal of Cosmology and Astroparticle Physics
, 2022
(12)
, Article 012. 10.1088/1475-7516/2022/12/012.
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Abstract
A search for Beyond the Standard Model double-β decay modes of 76Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (Gerda) experiment, located at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Improved limits on the decays involving Majorons have been obtained, compared to previous experiments with 76Ge, with half-life values on the order of 1023 yr. For the first time with 76Ge, limits on Lorentz invariance violation effects in double-β decay have been obtained. The isotropic coefficient å(3)of , which embeds Lorentz violation in double-β decay, has been constrained at the order of 10-6 GeV. We also set the first experimental limits on the search for light exotic fermions in double-β decay, including sterile neutrinos.
| Type: | Article |
|---|---|
| Title: | Search for exotic physics in double-β decays with GERDA Phase II |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1475-7516/2022/12/012 |
| Publisher version: | http://dx.doi.org/10.1088/1475-7516/2022/12/012 |
| Language: | English |
| Additional information: | Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10163228 |
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