Directional direct detection of light dark matter up-scattered by cosmic rays from direction of the Galactic center

Nagao, I. Keiko; Higashino, Satoshi; Naka, Tatsuhiro; Miuchi, Kentaro

https://hdl.handle.net/20.500.14094/0100491839

このアイテムのアクセス数:54件（2025-08-03 01:35 集計）

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メタデータID	0100491839
アクセス権	open access
出版タイプ	Accepted Manuscript
タイトル	Directional direct detection of light dark matter up-scattered by cosmic rays from direction of the Galactic center
著者	Nagao, I. Keiko ; Higashino, Satoshi ; Naka, Tatsuhiro ; Miuchi, Kentaro
著者名 Nagao, I. Keiko
著者ID A2707 研究者ID 1000000895469 KUID https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail.html?systemId=d62394de1dd33397520e17560c007669 著者名 Higashino, Satoshi 東野, 聡ヒガシノ, サトシ所属機関名理学研究科
著者名 Naka, Tatsuhiro
著者ID A0394 研究者ID 1000080362440 KUID https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail.html?systemId=ac6c60b26acb7242520e17560c007669 著者名 Miuchi, Kentaro 身内, 賢太朗ミウチ, ケンタロウ所属機関名理学研究科
言語	English (英語)
収録物名	Journal of Cosmology and Astroparticle Physics
巻(号)	2023(07)
ページ	061
出版者	IOP Publishing
刊行日	2023-07-28
公開日	2024-10-22
抄録	Dark matter with MeV scale mass is difficult to detect with standard direct search detectors. However, they can be searched for by considering the up-scattering of kinetic energies by cosmic rays. Because the dark matter density is higher in the central region of the Galaxy, the up-scattered dark matter will arrive at Earth from the direction of the Galactic center. Once the dark matter is detected, we can expect to recognize this feature by directional direct detection experiments. In this study, we simulate the nuclear recoils of the up-scattered dark matter and quantitatively reveal that a large amount of this type of dark matter is arriving from the direction of the Galactic center. Also, we have shown that the characteristic signatures of the up-scattered dark matter can be verified with more than 5σ confidence levels for the assumed target atoms and future upgrades to directional detectors.
キーワード	dark matter experiments
	dark matter detectors
	dark matter theory
カテゴリ	理学研究科
カテゴリ	学術雑誌論文
権利	This is the Accepted Manuscript version of an article accepted for publication in Journal of Cosmology and Astroparticle Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1475-7516/2023/07/061.
権利	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
関連情報	DOI https://doi.org/10.1088/1475-7516/2023/07/061

資源タイプ	journal article
eISSN	1475-7516　OPACで所蔵を検索　 CiNiiで学外所蔵を検索

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