Directional detection of dark matter with anisotropic response functions

Christian Boyd, Yonit Hochberg, Yonatan Kahn, Eric David Kramer, Noah Kurinsky, Benjamin V. Lehmann, To Chin Yu

Research output: Contribution to journalArticlepeer-review


Direct detection for sub-GeV dark matter is developing rapidly, with many novel experimental ideas and theoretical methods emerging. In this work, we extend the dielectric formalism for dark matter scattering to incorporate anisotropic material responses, enabling directionally sensitive experiments with a broad class of target materials. Using a simple model of an anisotropic electron gas, we demonstrate the importance of many-body effects such as the plasmon and show that, even when the dark matter kinetic energies are much smaller than the plasmon energy, the tail of an anisotropic plasmon can still produce a sizable daily modulation. We highlight the relevant experimental techniques required to establish the target response as well as the challenges in extracting a response function which is truly free of modeling uncertainties.

Original languageEnglish (US)
Article number015015
JournalPhysical Review D
Issue number1
StatePublished - Jul 1 2023

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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