Dependence of dark matter - electron scattering on the galactic dark matter velocity distribution

Radick, Aria; Taki, Anna-Maria; Yu, Tien-Tien

doi:10.1088/1475-7516/2021/02/004

Cited by 37 publications

(23 citation statements)

References 140 publications

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“…Other authors have suggested updates to the SHM that differ from those presented here, including Refs. [43,44] among others. We recommend to report results with respect to the nominal halo model, which will give a common point of comparison, while knowledge of the dark matter halo continues to improve, unless new measurements significantly alter the expected spectra, particularly at high masses.…”

Section: Experimenter Bias Mitigationmentioning

confidence: 99%

Recommended conventions for reporting results from direct dark matter searches

et al. 2021

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The field of dark matter detection is a highly visible and highly competitive one. In this paper, we propose recommendations for presenting dark matter direct detection results particularly suited for weak-scale dark matter searches, although we believe the spirit of the recommendations can apply more broadly to searches for other dark matter candidates, such as very light dark matter or axions. To translate experimental data into a final published result, direct detection collaborations must make a series of choices in their analysis, ranging from how to model astrophysical parameters to how to make statistical inferences based on observed data. While many collaborations follow a standard set of recommendations in some areas, for example the expected flux of dark matter particles (to a large degree based on a paper from Lewin and Smith in 1995), in other areas, particularly in statistical inference, they have taken different approaches, often from result to result by the same collaboration. We set out a number of recommendations on how to apply the now commonly used Profile Likelihood Ratio method to direct detection data. In addition, updated recommendations for the Standard Halo Model astrophysical parameters and relevant neutrino fluxes are provided. The authors of this note include members of the DAMIC, DarkSide, DARWIN, DEAP, LZ, NEWS-G, PandaX, PICO, SBC, SENSEI, SuperCDMS, and XENON collaborations, and these collaborations provided input to the recommendations laid out here. Wide-spread adoption of these recommendations will make it easier to compare and combine future dark matter results.

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Section: Experimenter Bias Mitigationmentioning

confidence: 99%

Recommended conventions for reporting results from direct dark matter searches

et al. 2021

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“…They may also provide important clues to break the degeneracy between the interacting dark matter effects and the warm dark matter effects. Finally, future prospects in direct detection, indirect detection, and collider searches, in addition to an increasingly more accurate understanding of the local density and velocity distributions of dark matter, which plays a vital role in direct detection efforts [143][144][145][146][147][148][149][150][151][152], could shed light on the mystery of the nature and interactions of dark matter. parameter space for dark matter-protons interaction and n = 0 (upper), n = −2 (middle), and n = −4 (lower), assuming f χ = 100% of dark matter interacts with protons.…”

Section: Discussionmentioning

confidence: 99%

Cosmological Constraints on Dark Matter Interactions with Ordinary Matter

Buen-Abad,

Essig,

McKeen

et al. 2021

Preprint

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Dark matter interactions with electrons or protons during the early Universe leave imprints on the cosmic microwave background and the matter power spectrum, and can be probed through cosmological and astrophysical observations. We explore these interactions using a diverse suite of data: cosmic microwave background anisotropies, baryon acoustic oscillations, the Lyman-α forest, and the abundance of Milky-Way subhalos. We derive constraints using model-independent parameterizations of the dark matter-electron and dark matter-proton interaction cross sections and map these constraints onto concrete dark matter models. Our constraints are complementary to other probes of dark matter interactions with ordinary matter, such as direct detection, big bang nucleosynthesis, various astrophysical systems, and accelerator-based experiments.

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“…Other mergers may leave more diffuse remnants, like the radially-anisotropic stellar substructure observed by Gaia (dubbed the "Gaia Enceladus" or "Gaia sausage"), implying corresponding DM substructure that may be ∼ 20% of the local DM density [29,35]. It is an open question to what extent the smooth component of the DM distribution may be correlated with stars, but the consequences for light DM phenomenology are largely driven by the quasi-Maxwellian bulk of the distribution, though important effects at experimental thresholds do arise from the high-velocity tail [36].…”

Section: A Kinematicsmentioning

confidence: 99%

Searches for light dark matter using condensed matter systems

Kahn,

Lin

2021

Preprint

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Identifying the nature of dark matter (DM) has long been a pressing question for particle physics. In the face of ever-more-powerful exclusions and null results from large-exposure searches for TeV-scale DM interacting with nuclei, a significant amount of attention has shifted to lighter (sub-GeV) DM candidates. Direct detection of the light dark matter in our galaxy by observing DM scattering off a target system requires new approaches compared to prior searches. Lighter DM particles have less available kinetic energy, and achieving a kinematic match between DM and the target mandates the proper treatment of collective excitations in condensed matter systems, such as charged quasiparticles or phonons. In this context, the condensed matter physics of the target material is crucial, necessitating an interdisciplinary approach. In this review, we provide a self-contained introduction to direct detection of keV-GeV DM with condensed matter systems. We give a brief survey of dark matter models and basics of condensed matter, while the bulk of the review deals with the theoretical treatment of DM-nucleon and DM-electron interactions. We also review recent experimental developments in detector technology, and conclude with an outlook for the field of sub-GeV DM detection over the next decade.

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Dependence of dark matter - electron scattering on the galactic dark matter velocity distribution

Cited by 37 publications

References 140 publications

Recommended conventions for reporting results from direct dark matter searches

Recommended conventions for reporting results from direct dark matter searches

Cosmological Constraints on Dark Matter Interactions with Ordinary Matter

Searches for light dark matter using condensed matter systems

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