Directional detection of dark matter with anisotropic response functions

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

doi:10.1103/physrevd.108.015015

Cited by 7 publications

(4 citation statements)

References 64 publications

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“…The last factor in eq. (4.5), related to the imaginary part of the permeability, is the magnetic analogue of the so-called "energy loss function," previously identified within the context of dark matter scattering and absorption [119][120][121][122][123]. This implies a direct connection between µ and the magnon eigensystem derived previously in ref.…”

Section: Classical Estimate Of Absorption Into Magnonssupporting

confidence: 54%

“…Therefore, it is useful to understand if specific calculations may be written in terms of experimentally measurable properties, within the kinematic regime appropriate for the incoming dark matter. Such an approach has been used for axioelectric absorption, and more recently developed for light dark matter coupling via a kinetically-mixed dark photon [119][120][121][122], as well as for the absorption of electromagnetically-coupled axion dark matter in magnetized media [123]. Both of these dark matter interaction rates have been related to the "energy loss function" Im(−1/ε).…”

Section: Classical Estimate Of Absorption Into Magnonsmentioning

confidence: 99%

“…In section 4, we revisit axion absorption into in-medium excitations. For dark photons and axions, such results are often determined by the "energy loss function" Im(−1/ε) [119][120][121][122][123], which has recently been applied to dark photons [121] and photon-coupled axions [123]. In section 4.1, we use a classical argument to show that in spin-polarized media, the absorption JHEP05(2024)314 Existing constraints on the axion-electron coupling.…”

Section: Jhep05(2024)314 1 Introductionmentioning

confidence: 99%

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Physical signatures of fermion-coupled axion dark matter

Berlin,

Millar,

Trickle

et al. 2024

J. High Energ. Phys.

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In the presence of axion dark matter, fermion spins experience an “axion wind” torque and an “axioelectric” force. We investigate new experimental probes of these effects and find that magnetized analogs of multilayer dielectric haloscopes can explore orders of magnitude of new parameter space for the axion-electron coupling. We also revisit the calculation of axion absorption into in-medium excitations, showing that axioelectric absorption is screened in spin-polarized targets, and axion wind absorption can be characterized in terms of a magnetic energy loss function. Finally, our detailed theoretical treatment allows us to critically examine recent claims in the literature. We find that axioelectric corrections to electronic energy levels are smaller than previously estimated and that the purported electron electric dipole moment due to a constant axion field is entirely spurious.

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Section: Classical Estimate Of Absorption Into Magnonssupporting

confidence: 54%

Section: Classical Estimate Of Absorption Into Magnonsmentioning

confidence: 99%

Section: Jhep05(2024)314 1 Introductionmentioning

confidence: 99%

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Physical signatures of fermion-coupled axion dark matter

Berlin,

Millar,

Trickle

et al. 2024

J. High Energ. Phys.

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show abstract

“…The theoretical description for a non-relativistic DM-electron interaction involving the inmedium effect in solids has been explored in the literature [35,[45][46][47][48]60]. Refs.…”

Section: Jcap12(2023)009 2 Scattering Rate Between Dm Particles and E...mentioning

confidence: 99%

The linear response theory approach to the sub-GeV dark matter in the Sun

Liang,

Zhang

2023

J. Cosmol. Astropart. Phys.

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In recent years, the importance of the electronic in-medium effect in the sub-GeV dark matter (DM) direct detection has been recognized and a coherent formulation of the DM-electron scattering based on the linear response theory has been well established in the literature. In this paper, we apply the formulation to the scattering between DM particles and solar medium, and it is found that the dynamic structure factor inherently incorporate the particle-particle scattering and in-medium effect. Using this tool and taking a benchmark model as an example, we demonstrate how the in-medium effect affects the scattering of DM particles in the Sun, in both the heavy and the light mediator limit. Formulae derived in this work lay the foundation for accurately calculating the spectra of solar-accelerated DM particles, which is of particular importance for the detection of DM particles via plasmon in semiconductor targets.

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Solar reflection of dark matter with dark-photon mediators

Emken,

Essig,

2024

J. Cosmol. Astropart. Phys.

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We consider the scattering of low-mass halo dark-matter particles in the hot plasma of the Sun, focusing on dark matter that interact with ordinary matter through a dark-photon mediator. The resulting “solar-reflected” dark matter (SRDM) component contains high-velocity particles, which significantly extend the sensitivity of terrestrial direct-detection experiments to sub-MeV dark-matter masses. We use a detailed Monte Carlo simulation to model the propagation and scattering of dark-matter particles in the Sun, including thermal effects, with special emphasis on ultralight dark-photon mediators. We study the properties of the SRDM flux, obtain exclusion limits from various direct-detection experiments, and provide projections for future experiments, focusing especially on those with silicon and xenon targets. We find that proposed future experiments with xenon and silicon targets can probe the entire “freeze-in benchmark”, in which dark matter is coupled to an ultralight dark photon, including dark-matter masses as low as 𝒪(keV). Our simulations and SRDM fluxes are publicly available.

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Directional detection of dark matter with anisotropic response functions

Cited by 7 publications

References 64 publications

Physical signatures of fermion-coupled axion dark matter

Physical signatures of fermion-coupled axion dark matter

The linear response theory approach to the sub-GeV dark matter in the Sun

Solar reflection of dark matter with dark-photon mediators

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