Agostini, M;
Bakalyarov, AM;
Balata, M;
Barabanov, I;
Baudis, L;
Bauer, C;
Bellotti, E;
... Zuzel, G; + view all
(2020)
First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c² with GERDA.
Physical Review Letters
, 125
(1)
, Article 011801. 10.1103/PhysRevLett.125.011801.
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Abstract
We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-β decay experiment which operates high-purity germanium detectors enriched in 76^{Ge} in an ultralow background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c² to 1 MeV/c². No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c² have been set. As an example, at a mass of 150 keV/c² the most stringent direct limits on the dimensionless couplings of axionlike particles and dark photons to electrons of g_{ae} < 3×10^{−12} and α′/α < 6.5×10^{-24} at 90% credible interval, respectively, were obtained.
| Type: | Article |
|---|---|
| Title: | First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c² with GERDA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.125.011801 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.125.011801 |
| Language: | English |
| Additional information: | © 2020 American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). |
| 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/10111985 |
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