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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. Barbosa; Carlin, 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.
- Issue Date
- 16-7월-2019
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.123, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 123
- Number
- 3
- ISSN
- 0031-9007
- 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.
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Collections - Graduate School > Department of Accelerator Science > 1. Journal Articles
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