Directional dark matter detection in anisotropic Dirac materials

Coskuner, Ahmet; Mitridate, Andrea; Olivares, A.; Zurek, Kathryn M.

doi:10.1103/physrevd.103.016006

Cited by 76 publications

(65 citation statements)

References 52 publications

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“…From the linear response relation J µ = −Π µν A ν 4 and Ohm's law J = σE = σ(iωA−iqA 0 ) we can relate Π T and Π L to the complex conductivity σ, which in turn is related to the complex dielectric ε via σ = iω(1 − ε) [17,23,26]:…”

Section: Jhep09(2021)123mentioning

confidence: 99%

“…In this appendix, we discuss the modifications needed to go beyond the isotropic limit. First, the in-medium photon self-energy matrix Π λλ may have nonzero off-diagonal entries, and its eigenvalues can be found by diagonalization [26]:…”

Section: B Absorption In Anisotropic Targetsmentioning

confidence: 99%

“…skipper charge-coupled devices [1], transition edge sensors [2][3][4][5], microwave kinetic inductance detectors [6] and quantum evaporation of helium atoms [7]) coupled with new theoretical investigations of various small-gap materials (e.g. O(eV)-gap semiconductor crystals [8][9][10][11][12][13][14][15][16][17][18][19][20][21], O(meV)-gap superconductors [22][23][24] and Dirac materials [25][26][27][28]) have opened up new possibilities in the pursuit of this goal, well beyond the scope of conventional searches based on nuclear recoils. In a direct detection experiment, DM may leave its trace not only via scattering off the target ions or electrons, but also via absorption if it is bosonic and has a mass that matches the difference between energy levels in the target system [14-16, 24-27, 29-40].…”

Section: Introductionmentioning

confidence: 99%

“…First of all, conductivity/dielectric data are not always readily available, especially for newly proposed, more exotic materials, in which case one has to resort to first-principles calculations and/or semi-analytic modeling (this is the case, e.g. for Dirac materials studied in several recent works [25][26][27][28]). Meanwhile, and more importantly, the question of whether DM absorption for a particular model can be simply related to photon absorption is a nontrivial one, and explicit calculations are needed to establish the answer.…”

Section: Introductionmentioning

confidence: 99%

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Dark matter absorption via electronic excitations

Mitridate

Trickle

Zhang

et al. 2021

J. High Energ. Phys.

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We revisit the calculation of bosonic dark matter absorption via electronic excitations. Working in an effective field theory framework and consistently taking into account in-medium effects, we clarify the relation between dark matter and photon absorption. As is well-known, for vector (dark photon) and pseudoscalar (axion-like particle) dark matter, the absorption rates can be simply related to the target material’s optical properties. However, this is not the case for scalar dark matter, where the dominant contribution comes from a different operator than the one contributing to photon absorption, which is formally next-to-leading-order and does not suffer from in-medium screening. It is therefore imperative to have reliable first-principles numerical calculations and/or semi-analytic modeling in order to predict the detection rate. We present updated sensitivity projections for semiconductor crystal and superconductor targets for ongoing and proposed direct detection experiments.

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Section: Jhep09(2021)123mentioning

confidence: 99%

Section: B Absorption In Anisotropic Targetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dark matter absorption via electronic excitations

Mitridate

Trickle

Zhang

et al. 2021

J. High Energ. Phys.

Self Cite

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“…The small energy depositions arising from such scatterings mean that they would not be detectable in standard WIMP direct detection experiments. Consequently, new experiments with lower energy thresholds are required, and there has been an extensive theoretical effort to identify suitable target materials and detection strategies [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

mentioning

confidence: 99%

DM-electron scattering in materials: sum rules and heterostructures

Lasenby,

Prabhu

2021

Preprint

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In recent years, a growing experimental program has begun to search for sub-GeV dark matter through its scattering with electrons. An associated theoretical challenge is to compute the dark matter scattering rate in experimental targets, and to find materials with large scattering rates. In this paper we point out that, if dark matter scatters through a mediator that couples to EM charge, then electromagnetic sum rules place limits on the achievable scattering rates. These limits serve as a useful sanity check for calculations, as well as setting a theoretical target for proposed detection methods. Motivated by this analysis, we explore how conductor-dielectric heterostructures can result in enhanced scattering rates compared to bulk conductors, for dark matter massesMeV. These effects could be especially important in computing the scattering rates from thin-film targets, e.g. superconducting detectors such as SNSPDs, TESs or MKIDs, for which the scattering rate could be enhanced by orders of magnitude at low enough dark matter masses, as well as introducing or enhancing directional dependence.

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Glueballs in a thermal squeezeout model

Asadi

Kramer

Kuflik

et al. 2022

J. High Energ. Phys.

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It has been shown that a first order confinement phase transition can drastically change the relic dark matter abundance in confining dark sectors with only heavy dark quarks. We study the phenomenology of one such model with a Z′ portal to Standard Model. We find that dark glueballs are long-lived in this setup and dilute the dark matter abundance after their decay to Standard Model. With this effect, the correct relic abundance is obtained with dark matter masses up to $$ \mathcal{O} $$ O (106) TeV. We find that while a part of the parameter space is already ruled out by direct detection and collider searches, there is still a broad space of viable scenarios that can be probed by future experiments.

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Directional dark matter detection in anisotropic Dirac materials

Cited by 76 publications

References 52 publications

Dark matter absorption via electronic excitations

Dark matter absorption via electronic excitations

DM-electron scattering in materials: sum rules and heterostructures

Glueballs in a thermal squeezeout model

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