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Directional dark matter detection in anisotropic Dirac materials

Coskuner, Ahmet and Mitridate, Andrea and Olivares, Andres and Zurek, Kathryn M. (2021) Directional dark matter detection in anisotropic Dirac materials. Physical Review D, 103 (1). Art. No. 016006. ISSN 2470-0010. doi:10.1103/PhysRevD.103.016006.

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Dirac materials, because of their small O(meV) band gap, are a promising target for dark photon-mediated scattering and absorption of light dark matter. In this paper, we characterize the daily modulation rate of dark matter interacting with a Dirac material due to anisotropies in their crystal structure. We show that daily modulation is an O(1) fraction of the total rate for dark matter scattering in the Dirac material ZrTe₅. When present, the modulation is dominated by the orientation of the material’s dielectric tensor with respect to the dark matter wind and is maximized when the crystal is oriented such that the dark matter wind is completely aligned with the largest and smallest components of the dielectric tensor at two different times of the day. Because of the large modulation, any putative dark matter scattering signal could be rapidly verified or ruled out by changing the orientation of the crystal with respect to the wind and observing how the daily modulation pattern changes.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mitridate, Andrea0000-0003-2898-5844
Zurek, Kathryn M.0000-0002-2629-337X
Additional Information:© 2020 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 13 June 2020; accepted 17 December 2020; published 6 January 2021. We thank Sinead Griffin, Adolfo Grushin, Tanner Trickle, and Kevin Zhang for discussions, and Yoni Kahn for comments on the paper. We especially thank Marco Bernardi and Hsiao-Yi Chen for discussions and collaboration on future related work. This work was supported by the Quantum Information Science Enabled Discovery for High Energy Physics (KA2401032) at LBNL.
Group:Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Lawrence Berkeley National LaboratoryKA2401032
Issue or Number:1
Record Number:CaltechAUTHORS:20200731-123409240
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104681
Deposited By: Tony Diaz
Deposited On:31 Jul 2020 20:21
Last Modified:16 Nov 2021 18:34

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