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Probing the dark matter velocity distribution via daily modulation

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arxiv 2312.17550 v2 pith:4BOTJ7CF submitted 2023-12-29 hep-ph

Probing the dark matter velocity distribution via daily modulation

classification hep-ph
keywords anisotropicdailydarkmattermodulationvelocitycomponentanalyze
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider dark matter velocity distributions with an anisotropic component, and analyze how the velocity structure can be probed in a solid state ionization detector with no directional detection capability using a daily modulation effect due to the anisotropic response function of the target. We show that with an energy resolution of < 10 eV it is possible to identify the presence of an anisotropic component consistent with observations for sub-GeV dark matter, and that introduction of daily modulation information substantially improves the sensitivity in a narrow mass range.

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