Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target

Adhikari, G.; Souza, E. Barbosa de; Carlin, N.; Choi, Jungyu; Choi, S.; Djamal, Mitra; Ezeribe, A. C.; França, L. E.; Ha, C.; Hahn, I. S.; Jeon, E. J.; Jo, J. H.; Joo, Hyun-Woo; Kang, W. G.; Kauer, M.; Kim, Hyounggyu; Kim, Hongjoo; Kim, Kyungwon; Kim, Sung-Hyun; Kim, Sun Kee; Kim, Won Kyung; Kim, Yeongduk; Kim, Y. H.; Ko, Y. J.; Lee, Eun Kyung; Lee, Hyunseok; Lee, Hyun Su; Lee, Hye Young; Lee, In Su; Lee, Jaison; Lee, Jooyoung; Lee, Moo Hyun; Lee, Seo Hyun; Lee, Seung Mok; Leonard, D. S.; Manzato, B. B.; Maruyama, R.; Neal, Robert J.; Olsen, S. L.; Park, Byung Ju; Park, Hyangkyu; Park, Hyeonseo; Park, Kangsoon; Pitta, R. L. C.; Prihtiadi, H.; Ra, Sejin; Rott, C.; Shin, Keon Ah; Scarff, A.; Spooner, N. J. C.; Thompson, W. G.; Yang, L.; Yu, Gyun Ho

doi:10.1126/sciadv.abk2699

Cited by 49 publications

(25 citation statements)

References 56 publications

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“…Using 1.7 years of data, the collaboration has ruled out model-dependent dark matter interpretations of the DAMA signals in the specific context of standard halo model with the same NaI(Tl) target for various interaction hypotheses [258]. It also reported model independent searches of the annual modulation signal using 1.7 years data with 2 keV analysis threshold.…”

Section: Cosine-100mentioning

confidence: 99%

Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them

Leane¹,

Shin²,

Yang³

et al. 2022

Preprint

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Intriguing signals with excesses over expected backgrounds have been observed in many astrophysical and terrestrial settings, which could potentially have a dark matter origin. Astrophysical excesses include the Galactic Center GeV gamma-ray excess detected by the Fermi Gamma-Ray Space Telescope, the AMS antiproton and positron excesses, and the 511 and 3.5 keV X-ray lines. Direct detection excesses include the DAMA/LIBRA annual modulation signal, the XENON1T excess, and low-threshold excesses in solid state detectors. We discuss avenues to resolve these excesses, with actions the field can take over the next several years.

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Section: Cosine-100mentioning

confidence: 99%

Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them

Leane¹,

Shin²,

Yang³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, in the low-energy signal region below 10 keVee, PMT-induced noise events are predominantly triggered. Moreover, employing a multivariable analysis technique using a boosted decision tree (BDT) achieved 1 keVee analysis threshold with less than 0.1 % noise contamination and above 80 % selection efficiency [51,52]. A further improvement of the low-energy event selection is ongoing based on the development of new parameters for the BDT coupled with employing a machine learning technique that uses raw waveform directly.…”

Section: Nai(tl) As a Ceνns Detectormentioning

confidence: 99%

Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment

Choi¹,

J.²,

Kim³

et al. 2022

Preprint

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Neutrino Elastic scattering Observation with NaI (NEON) is an experiment designed to detect neutrino-nucleus coherent scattering using reactor electron antineutrinos. NEON is based on an array of six NaI(Tl) crystals with a total mass of 13.3 kg, located at the tendon gallery that is 24 m away from a reactor core with a thermal power of 2.8 GW in the Hanbit nuclear power complex. The installation of the NEON detector was completed in December 2020, and since May 2021, the detector has been acquiring data at full reactor power. This paper describes the design of the NEON detector, including the shielding arrangement, configuration of the NaI(Tl) crystals, and associated operation systems. The initial performance and associated sensitivity of the experiment are presented.

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“…Several experimental efforts using the same NaI(Tl) target materials are currently underway [11][12][13][14][15][16][17]. The COSINE-100 experiment is one such effort presently operating at the Yangyang underground laboratory in Korea, which has provided several exciting physics results [9,[18][19][20][21]. However, due to the approximately 2-3 times higher background level, an unambiguous conclusion regarding the observation in the DAMA experiment using the same annual modulation signal has not been observed yet [22,23].…”

Section: Introductionmentioning

confidence: 99%

Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment

et al. 2023

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The COSINE-100 experiment has been operating with 106 kg of low-background NaI(Tl) detectors to test the results from the DAMA/LIBRA experiment, which claims to have observed dark matter. However, since the background of the NaI(Tl) crystals used in the COSINE-100 experiment is 2–3 times higher than that in the DAMA detectors, no conclusion regarding the claimed observation from the DAMA/LIBRA experiment could be reached. Therefore, we plan to upgrade the current COSINE-100 experiment to the next phase, COSINE-200, by using ultra-low background NaI(Tl) detectors. The basic principle was already proved with the commercially available Astro-grade NaI powder from Sigma-Aldrich (now Merck) company. However, we have developed a mass production process of ultra-pure NaI powder at the Center for Underground Physics (CUP) of the Institute for Basic Science (IBS), Korea, using the direct purification of the raw NaI powder. We plan to produce more than 1,000 kg of ultra-pure powder for the COSINE-200 experiment. With our crystal grower installed at CUP, we have successfully grown a low-background crystal using our purification technique for the NaI powder. We have assembled a low-background NaI(Tl) detector. In this article, we report the performance of this ultra-pure NaI(Tl) crystal detector produced at IBS, Korea.

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Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target

Abstract: Dark matter interpretations of the DAMA signals are excluded by COSINE-100 with the same NaI(Tl) target for various models.

Cited by 49 publications

References 56 publications

Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them

Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them

Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment

Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment

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