DarkSide-20k sensitivity to light dark matter particles

IF 5.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Communications Physics Pub Date : 2024-12-26 DOI:10.1038/s42005-024-01896-z

The DarkSide-20k Collaboration

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Abstract

The dual-phase liquid argon time projection chamber is presently one of the leading technologies to search for dark matter particles with masses below 10 GeV c−2. This was demonstrated by the DarkSide-50 experiment with approximately 50 kg of low-radioactivity liquid argon as target material. The next generation experiment DarkSide-20k, currently under construction, will use 1,000 times more argon and is expected to start operation in 2027. Based on the DarkSide-50 experience, here we assess the DarkSide-20k sensitivity to models predicting light dark matter particles, including Weakly Interacting Massive Particles (WIMPs) and sub-GeV c−2 particles interacting with electrons in argon atoms. With one year of data, a sensitivity improvement to dark matter interaction cross-sections by at least one order of magnitude with respect to DarkSide-50 is expected for all these models. A sensitivity to WIMP–nucleon interaction cross-sections below 1 × 10−42 cm2 is achievable for WIMP masses above 800 MeV c−2. With 10 years exposure, the neutrino fog can be reached for WIMP masses around 5 GeV c−2. The DarkSide-20k collaboration reports the sensitivity of its detector, currently under construction, to models predicting light dark matter particles. This includes Weakly Interacting Massive Particles and particles interacting with bound electrons of argon atoms.

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DarkSide-20k对轻暗物质粒子的灵敏度

双相液态氩时间投影室是目前寻找质量低于10 GeV c−2的暗物质粒子的主要技术之一。DarkSide-50实验用大约50公斤的低放射性液态氩作为目标材料证明了这一点。目前正在建设的下一代实验装置DarkSide-20k将使用1000倍以上的氩气，预计将于2027年开始运行。基于DarkSide-50的经验，我们评估了DarkSide-20k对轻暗物质粒子预测模型的灵敏度，包括弱相互作用大质量粒子（wimp）和亚gev c−2粒子与氩原子中的电子相互作用。有了一年的数据，预计所有这些模型对暗物质相互作用截面的灵敏度将比DarkSide-50至少提高一个数量级。对于质量在800 MeV c−2以上的WIMP，对1 × 10−42 cm2以下的WIMP -核子相互作用截面的灵敏度是可以实现的。经过10年的暴露，WIMP质量在5 GeV c−2左右的中微子雾可以达到。DarkSide-20k合作项目报告了目前正在建造的探测器对预测轻暗物质粒子模型的灵敏度。这包括弱相互作用的大质量粒子和与氩原子的束缚电子相互作用的粒子。

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来源期刊

Communications Physics Physics and Astronomy-General Physics and Astronomy

CiteScore

8.40

自引率

3.60%

发文量

276

审稿时长

13 weeks

期刊介绍： Communications Physics is an open access journal from Nature Research publishing high-quality research, reviews and commentary in all areas of the physical sciences. Research papers published by the journal represent significant advances bringing new insight to a specialized area of research in physics. We also aim to provide a community forum for issues of importance to all physicists, regardless of sub-discipline. The scope of the journal covers all areas of experimental, applied, fundamental, and interdisciplinary physical sciences. Primary research published in Communications Physics includes novel experimental results, new techniques or computational methods that may influence the work of others in the sub-discipline. We also consider submissions from adjacent research fields where the central advance of the study is of interest to physicists, for example material sciences, physical chemistry and technologies.