@article{3509f58c69a841408c534870a7a88988,
title = "Lowering the energy threshold in COSINE-100 dark matter searches",
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 9.5σ. 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.",
keywords = "COSINE-100, Dark matter, Low threshold, NaI(Tl)",
author = "{The COSINE-100 Collaboration} and G. Adhikari and {de Souza}, {E. Barbosa} and N. Carlin and Choi, {J. J.} and S. Choi and M. Djamal and Ezeribe, {A. C.} and Fran{\c c}a, {L. E.} and C. Ha and Hahn, {I. S.} and Jeon, {E. J.} and Jo, {J. H.} and Kang, {W. G.} and M. Kauer and H. Kim and Kim, {H. J.} and Kim, {K. W.} and Kim, {S. K.} and Kim, {Y. D.} and Kim, {Y. H.} and Ko, {Y. J.} and Lee, {E. K.} and Lee, {H. S.} and J. Lee and Lee, {J. Y.} and Lee, {M. H.} and Lee, {S. H.} and Leonard, {D. S.} and Manzato, {B. B.} and Maruyama, {R. H.} and Neal, {R. J.} and Olsen, {S. L.} and Park, {B. J.} and Park, {H. K.} and Park, {H. S.} and Park, {K. S.} and Pitta, {R. L.C.} and H. Prihtiadi and Ra, {S. J.} and C. Rott and Shin, {K. A.} and A. Scarff and Spooner, {N. J.C.} and Thompson, {W. G.} and L. Yang and Yu, {G. H.}",
note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",
year = "2021",
month = jul,
doi = "10.1016/j.astropartphys.2021.102581",
language = "English",
volume = "130",
journal = "Astroparticle Physics",
issn = "0927-6505",
publisher = "Elsevier B.V.",
}