Novel direct detection constraints on light dark matter
TL;DR: In this paper, the authors derive novel constraints from the inevitable existence of a subdominant, but highly energetic, component of particle dark matter generated through collisions with cosmic rays, which limits the DM-nucleon scattering cross-section to be below the threshold for both spinindependent and spindependent scattering of light DM.
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Abstract: All attempts to directly detect particle dark matter (DM) scattering on nuclei suffer from the partial or total loss of sensitivity for DM masses in the GeV range or below. We derive novel constraints from the inevitable existence of a subdominant, but highly energetic, component of DM generated through collisions with cosmic rays. Subsequent scattering inside conventional DM detectors, as well as neutrino detectors sensitive to nuclear recoils, limits the DM-nucleon scattering cross section to be below ${10}^{\ensuremath{-}31}\text{ }\text{ }{\mathrm{cm}}^{2}$ for both spin-independent and spin-dependent scattering of light DM.
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Citations
Optomechanical dark matter instrument for direct detection
Christopher G. Baker,Warwick P. Bowen,Tsutomu T. Yanagida,Matthew J. Dolan,G. Cella,Glen I. Harris +5 more
TL;DR: Researchers propose the Optomechanical Dark-matter Instrument (ODIN) for direct detection of low-mass dark matter, utilizing an optomechanical cavity with superfluid helium to convert dark matter interactions into detectable photons, potentially probing keV scale dark matter.
Signatures of afterglows from light dark matter boosted by supernova neutrinos in current and future large underground detectors
Yen-Hsun Lin,Tsung-Han Tsai,Guey-Lin Lin,H. T. Wong,Meng-Ru Wu +4 more
- 01 Jan 2023
TL;DR: SN$
u$ BDM afterglow signatures hold promise for extracting DM mass and distinguishing different interaction types. Detailed analysis of temporal profile, angular distribution, and energy spectrum is performed for a general framework of SN$
u$ BDM fluxes. Unique signatures and expected sensitivities are discussed for current and future large underground detectors.
Dark matter raining on DUNE and other large volume detectors
Javier F. Acevedo,J. Berger,Peter B. Denton +2 more
TL;DR: Researchers investigate a scenario where dark matter is boosted to large velocities due to attractive forces, enhancing detection capabilities at large-volume neutrino detectors like DUNE, Super-K, and Hyper-K, and creating anisotropic signals.
Constraining light dark matter upscattered by ultrahigh-energy cosmic rays
Chen Xia,Yan-Hao Xu,Yu-Feng Zhou +2 more
TL;DR: In this paper, it was shown that if the UHECR energy spectrum follows a power law of type ∼ E − 3, the derived constraints on the scattering cross section will be highly insensitive to DM particle mass.
Limits on the Light Dark Matter–Proton Cross Section from Cosmic Large-Scale Structure
27 Apr 2022
TL;DR: In this article , the authors set the strongest limits to date on the velocity-independent dark matter (DM)-proton cross section σ for DM masses m=10 keV to 100 GeV, using large-scale structure traced by the Lyman-alpha forest.
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