[논문]Lowering the energy threshold in COSINE-100 dark matter searches

Adhikari, G.; de Souza, E. Barbosa; Carlin, N.; Choi, J.J.; Choi, S.; Djamal, M.; Ezeribe, A.C.; Franç; a, L.E.; Ha, C.; Hahn, I.S.; Jeon, E.J.; Jo, J.H.; Kang, W.G.; Kauer, M.; Kim, H.; Kim, H.J.; Kim, K.W.; Kim, S.K.; Kim, Y.D.; Kim, Y.H.; Ko, Y.J.; Lee, E.K.; Lee, H.S.; Lee, J.; Lee, J.Y.; Lee, M.H.; Lee, S.H.; Leonard, D.S.; Manzato, B.B.; Maruyama, R.H.; Neal, R.J.; 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.

doi:10.1016/j.astropartphys.2021.102581

[해외논문] Lowering the energy threshold in COSINE-100 dark matter searches 원문보기

Astroparticle physics, v.130, 2021년, pp.102581 -

Adhikari, G. (Department of Physics, Sejong University) , de Souza, E. Barbosa (Department of Physics and Wright Laboratory, Yale University) , Carlin, N. (Physics Institute, University of Sã) , Choi, J.J. (o Paulo) , Choi, S. (Department of Physics and Astronomy, Seoul National University) , Djamal, M. (Department of Physics and Astronomy, Seoul National University) , Ezeribe, A.C. (Department of Physics, Bandung Institute of Technology) , França, L.E. (Department of Physics and Astronomy, University of Sheffield) , Ha, C. (Physics Institute, University of Sã) , Hahn, I.S. (o Paulo) , Jeon, E.J. (Department of Physics, Chung-Ang University) , Jo, J.H. (Department of Science Education, Ewha Womans University) , Kang, W.G. (Center for Underground Physics, Institute for Basic Science (IBS)) , Kauer, M. (Departme) , Kim, H. , Kim, H.J. , Kim, K.W. , Kim, S.K. , Kim, Y.D. , Kim, Y.H. , Ko, Y.J. , Lee, E.K. , Lee, H.S. , Lee, J. , Lee, J.Y. , Lee, M.H. , Lee, S.H. , Leonard, D.S. , Manzato, B.B. , Maruyama, R.H. , Neal, R.J. , 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.

Abstract ▼ AI-Helper

Abstract 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 σ . 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.

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