Adhikari, G., Carlin, N., Choi, J.J. et al. (56 more authors) (2023) Search for boosted dark matter in COSINE-100. Physical Review Letters, 131 (20). 201802. ISSN 0031-9007
Abstract
We search for energetic electron recoil signals induced by boosted dark matter (BDM) from the galactic center using the COSINE-100 array of NaI(Tl) crystal detectors at the Yangyang Underground Laboratory. The signal would be an excess of events with energies above 4 MeV over the well-understood background. Because no excess of events are observed in a 97.7 kg·yr exposure, we set limits on BDM interactions under a variety of hypotheses. Notably, we explored the dark photon parameter space, leading to competitive limits compared to direct dark photon search experiments, particularly for dark photon masses below 4 MeV and considering the invisible decay mode. Furthermore, by comparing our results with a previous BDM search conducted by the Super-Kamionkande experiment, we found that the COSINE-100 detector has advantages in searching for low-mass dark matter. This analysis demonstrates the potential of the COSINE-100 detector to search for MeV electron recoil signals produced by the dark sector particle interactions.
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Copyright, Publisher and Additional Information: | © 2023 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | ||||||
Keywords: | COSINE-100 Collaboration | ||||||
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Institution: | The University of Sheffield | ||||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) | ||||||
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Depositing User: | Symplectic Sheffield | ||||||
Date Deposited: | 17 Jan 2024 15:53 | ||||||
Last Modified: | 17 Jan 2024 15:53 | ||||||
Published Version: | http://dx.doi.org/10.1103/physrevlett.131.201802 | ||||||
Status: | Published | ||||||
Publisher: | American Physical Society (APS) | ||||||
Refereed: | Yes | ||||||
Identification Number: | https://doi.org/10.1103/physrevlett.131.201802 | ||||||
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