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Experimental Limits on Solar Reflected Dark Matter with a New Approach on Accelerated-Dark-Matter-Electron Analysis in Semiconductors

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arxiv 2309.14982 v3 pith:RQ5A5BNW submitted 2023-09-26 hep-ex hep-phphysics.ins-det

Z. Y. Zhang , L. T. Yang , Q. Yue , K. J. Kang , Y. J. Li , H. P. An , Greeshma C. , J. P. Chang
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Y. H. Chen J. P. Cheng W. H. Dai Z. Deng C. H. Fang X. P. Geng H. Gong Q. J. Guo T. Guo X. Y. Guo L. He S. M. He J. W. Hu H. X. Huang T. C. Huang L. Jiang S. Karmakar H. B. Li H. Y. Li J. M. Li J. Li Q. Y. Li R. M. J. Li X. Q. Li Y. L. Li Y. F. Liang B. Liao F. K. Lin S. T. Lin J. X. Liu S. K. Liu Y. D. Liu Y. Liu Y. Y. Liu H. Ma Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan M. K. Singh T. X. Sun C. J. Tang Y. Tian G. F. Wang J. Z. Wang L. Wang Q. Wang Y. F. Wang Y. X. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing R. Xu Y. Xu T. Xue Y. L. Yan N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng Z. Zeng B. T. Zhang F. S. Zhang L. Zhang Z. H. Zhang J. Z. Zhao K. K. Zhao M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu
This is my paper · ORCID
classification hep-exhep-phphysics.ins-det
keywords dm-electronacceleratedanalysissemiconductorconstraintdarkdetectorsfirst
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Recently a dark matter-electron (DM-electron) paradigm has drawn much attention. Models beyond the standard halo model describing DM accelerated by high energy celestial bodies are under intense examination as well. In this Letter, a velocity components analysis (VCA) method dedicated to swift analysis of accelerated DM-electron interactions via semiconductor detectors is proposed and the first HPGe detector-based accelerated DM-electron analysis is realized. Utilizing the method, the first germanium based constraint on sub-GeV solar reflected DM-electron interaction is presented with the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. In the heavy mediator scenario, our result excels in the mass range of 5$-$15 keV/$c^2$, achieving a 3 orders of magnitude improvement comparing with previous semiconductor experiments. In the light mediator scenario, the strongest laboratory constraint for DM lighter than 0.1 MeV/$c^2$ is presented. The result proves the feasibility and demonstrates the vast potential of the VCA technique in future accelerated DM-electron analyses with semiconductor detectors.

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Cited by 3 Pith papers

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  2. Constraints on Sub-MeV Dark Matter from Solar Reflection with DAMIC-M

    hep-ex 2026-07 conditional novelty 5.5 of 10

    With ~1.3 kg-day of DAMIC-M skipper-CCD data, solar-reflected dark matter yields 90% CL limits on the DM-electron cross section reaching 3.16e-37 cm2 at 0.1 MeV for an ultralight mediator.

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