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Jeon, Eun Ju
지하실험 연구단
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Lowering the energy threshold in COSINE-100 dark matter searches

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Title
Lowering the energy threshold in COSINE-100 dark matter searches
Author(s)
Adhikari, G.; de Souza, E. Barbosa; Carlin, N.; Choi, J. J.; Choi, S.; Djamal, M.; Ezeribe, A. C.; Franca, L. E.; Ha, C.; Hahn, I. S.; Jeon, Eun Ju; Jo, J. H.; Woon Gu, Kang; Kauer, M.; Hyoun Gyu, Kim; Kim, H. J.; Kyungwon, Kim; Kim, S. K.; Kim, Yeongduk; Kim, Yong Hamb; Ko, Young Ju; Lee, Eun Kyoung; Lee, Hyun Su; Lee,, Jaison; Lee, J. Y.; Lee, Moo Hyun; Seo Hyun Lee; Douglas, Leonard; Manzato, B. B.; Maruyama, R. H.; Neal, R. J.; Stephen Lars Olsen; Byung Ju Park; Park, H. K.; Park, H. S.; Kang Soon, Park; Pitta, R. L. C.; Prihtiadi, Hafizh; Se Jin, Ra; Rott, C.; Shin, Keonah; Scarff, A.; Spooner, N. J. C.; Thompson, W. G.; Yang, L.; Yu, G. H.
Publication Date
2021-07
Journal
Astroparticle Physics, v.130
Publisher
Elsevier BV
Abstract
©2021 Elsevier B.V. All rights reserved. COSINE-100 is a dark matter detection experiment that uses NaI(Tl) crystal detectors operating at the Yangyang underground laboratory in Korea since September 2016. Its main goal is to test the annual modulation observed by the DAMA/LIBRA experiment with the same target medium. Recently DAMA/LIBRA has released data with an energy threshold lowered to 1 keV, and the persistent annual modulation behavior is still observed at 9.5 sigma. By lowering the energy threshold for electron recoils to 1 keV, COSINE-100 annual modulation results can be compared to those of DAMA/LIBRA in a model-independent way. Additionally, the event selection methods provide an access to a few to sub-GeV dark matter particles using constant rate studies. In this article, we discuss the COSINE-100 event selection algorithm, its validation, and efficiencies near the threshold. (C) 2021 Elsevier B.V. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/10346
DOI
10.1016/j.astropartphys.2021.102581
ISSN
0927-6505
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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