{"paper":{"title":"Lowering threshold of NaI(Tl) scintillator to 0.7 keV in the COSINE-100 experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A. C. Ezeribe, B. B. Manzato, B. H. Kim, B. J. Park, C. Ha, C. Rott, D. F. F. S. Cavalcante, D. H. Lee, D. S. Leonard, E. J. Jeon, E. K. Lee, G. H. Yu, H. J. Kim, H. K. Park, H. Lee, H. Prihtiadi, H. S. Lee, H. S. Park, H. W. Joo, H. Y. Lee, I. S. Hahn, I. S. Lee, J. C. Park, J. J. Choi, J. Kim, J. Lee, J. Y. Cho, J. Y. Lee, K. A. Shin, K. S. Park, K. W. Kim, L. E. Fran\\c{c}a, L. T. Truc, L. Yang, M. H. Lee, M. Kauer, M. K. Son, N. Carlin, N. J. C. Spooner, N. T. Luan, R. H. Maruyama, R. J. Neal, R. L. C. Pitta, S. Choi, S. D. Park, S. H. Kim, S. H. Lee, S. J. Hollick, S. J. Ra, S. K. Kim, S. L. Olsen, S. M. Lee, V. H. A. Machado, W. G. Kang, W. K. Kim, Y. D. Kim, Y. H. Kim, Y. J. Ko, Y. J. Lee","submitted_at":"2024-08-26T23:26:33Z","abstract_excerpt":"COSINE-100 is a direct dark matter search experiment, with the primary goal of testing the annual modulation signal observed by DAMA/LIBRA, using the same target material, NaI(Tl). In previous analyses, we achieved the same 1 keV energy threshold used in the DAMA/LIBRA's analysis that reported an annual modulation signal with 11.6$\\sigma$ significance. In this article, we report an improved analysis that lowered the threshold to 0.7 keV, thanks to the application of Multi-Layer Perception network and a new likelihood parameter with waveforms in the frequency domain. The lower threshold would e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.14688","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.14688/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}