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Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment

Title
Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment
Authors
Adhikari, G.Adhikari, P.de Souza, E. BarbosaCarlin, N.Choi, S.Djamal, M.Ezeribe, A. C.Ha, C.Hahn, I. S.Jeon, E. J.Jo, J. H.Joo, H. W.Kang, W. G.Kang, W.Kauer, M.Kim, G. S.Kim, H.Kim, H. J.Kim, K. W.Kim, N. Y.Kim, S. K.Kim, Y. D.Kim, Y. H.Ko, Y. J.Kudryavtsev, V. A.Lee, H. S.Lee, J.Lee, J. Y.Lee, M. H.Leonard, D. S.Lynch, W. A.Maruyama, R. H.Mouton, F.Olsen, S. L.Park, B. J.Park, H. K.Park, H. S.Park, K. S.Pitta, R. L. C.Prihtiadi, H.Ra, S. J.Rott, C.Shin, K. A.Scarff, A.Spooner, N. J. C.Thompson, W. G.Yang, L.Yu, G. H.COSINE-100 Collaboration
Ewha Authors
한인식
SCOPUS Author ID
한인식scopus
Issue Date
2019
Journal Title
PHYSICAL REVIEW LETTERS
ISSN
0031-9007JCR Link

1079-7114JCR Link
Citation
PHYSICAL REVIEW LETTERS vol. 123, no. 3
Publisher
AMER PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
We present new constraints on the dark matter-induced annual modulation signal using 1.7 years of COSINE-100 data with a total exposure of 97.7 kg yr. The COSINE-100 experiment, consisting of 106 kg of NaI(Tl) target material, is designed to carry out a model-independent test of DAMA/LIBRA's claim of WIMP discovery by searching for the same annual modulation signal using the same NaI(Tl) target. The crystal data show a 2.7 cpd/kg/keV background rate on average in the 2-6 keV energy region of interest. Using a chi-squared minimization method we observe best fit values for modulation amplitude and phase of 0.0092 +/- 0.0067 cpd/kg/keV and 127.2 +/- 45.9 d, respectively.
DOI
10.1103/PhysRevLett.123.031302
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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