Exoplanets as Sub-GeV Dark Matter Detectors

Leane, Rebecca K.; Smirnov, Juri

doi:10.1103/physrevlett.126.161101

Cited by 77 publications

(92 citation statements)

References 189 publications

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“…Underground DM direct detection (DD) experiments search for recoil signals from the possible scatterings between the halo DM particles and target nuclei. Stringent constraints on the DM-nucleon scattering cross section have been established, which reaches σ χp ≤ O(10 −46 ) cm 2 for DM particle mass around O (10) GeV [1,2]. As the typical detection threshold of the current experiments is of O(keV), for the standard halo DM with a typical escape velocity of ∼ 540 km s −1 , the current DD experiments lose sensitivity rapidly to DM particles with mass below a few GeV.…”

Section: Introductionmentioning

confidence: 90%

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Production and attenuation of cosmic-ray boosted dark matter

Xia,

Xu,

Zhou

2021

Preprint

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Light sub-GeV halo dark matter (DM) particles up-scattered by high-energy cosmic-rays (CRs) (referred to as CRDM) can be energetic and become detectable by conventional DM direct detection experiments. We perform a refined analysis on the exclusion bounds of the spin-independent DMnucleon scattering cross section σ χp in this approach. For the exclusion lower bounds, we determine the parameter of the effective distance D eff for CRDM production using spatial-dependent CR fluxes and including the contributions from the major heavy CR nuclear species. We obtain D eff 9 kpc for CRDM particles with kinetic energy above ∼ 1 GeV, which pushes the corresponding exclusion lower bounds down to σ χp ∼ 4 × 10 −32 cm 2 for DM particle mass at MeV scale and below. For the exclusion upper bounds from Earth attenuation, previous estimations neglecting the nuclear form factor leaded to typical exclusion upper bounds of σ χp ∼ O(10 −28 ) cm 2 from the XENON1T data. Using both the analytic and numerical approaches, we show that for CRDM particles, the presence of the nuclear form factor strongly suppresses the effect of Earth attenuation. Consequently, the cross section that can be excluded by the XENON1T data can be a few orders of magnitude higher, which closes the gap in the cross sections excluded by the XENON1T experiment and that by the astrophysical measurements such that for the cosmic microwave background (CMB), galactic gas cloud cooling, and structure formation, etc..

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Section: Introductionmentioning

confidence: 90%

“…In particular, we compare the effective distances D eff (T χ ) defined in Eq. (10) Appendix B: Parameters of the Primary CR Sources…”

Section: Appendix A: Comparison Of Dark Matter Profilesmentioning

confidence: 99%

Production and attenuation of cosmic-ray boosted dark matter

Xia,

Xu,

Zhou

2021

Preprint

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“…The possible influence of dark matter on exoplanets has recently been considered by Leane & Smirnov (2021). They suggest that dark matter with masses above ∼ 1 MeV can be probed through dark matter-induced exoplanet heating inversely correlated with the Galactic radial position.…”

Section: Stars and Planets As Dark Matter Detectorsmentioning

confidence: 99%

Gaia, Fundamental Physics, and Dark Matter

Perryman¹,

Zioutas²

2021

Preprint

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The Gaia space astrometry mission is measuring accurate distances and space motions of more than two billion stars throughout our Galaxy and beyond. This is a first look at how Gaia is contributing to fundamental physics, and in particular to our understanding of dark matter, for which a few examples are given from the current literature. One of our goals is to illustrate how deep, and often surprising, insight into very diverse areas of fundamental physics can be extracted from this new and enormous high-accuracy stellar data set. In this spirit, we finish by suggesting a search for a connection between stellar activity, dark matter streams, and planetary configuration in nearby exoplanetary systems, as has been tentatively proposed in the case of the solar system.

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“…Finally, if some of the proposals for indirect detection of dark matter could materialize, we would have a more solid understanding regarding the nature of this component, in Ref. [26] it is established that exoplanets can serve as dark matter detectors since their temperatures could be affected by a heat flux generated by the dark matter surrounding them. If some information it is extracted from exoplanets, we could have a new paradigm on the role of dark matter in scenarios as the one considered in this work.…”

Section: Introductionmentioning

confidence: 99%

Holographic dark energy in curved spacetime for interacting fluids

Bolaños¹,

Crúz²,

Lepe³

et al. 2021

Preprint

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In this work we explore some aspects of two holographic models for dark energy within the interacting scenario for the dark sector with the inclusion of spatial curvature. A statistical analysis for each holographic model is performed together with their corresponding extensions given by the consideration of massive neutrinos. The first holographic approach considers the usual formula proposed by Li for the dark energy density with a constant parameter c and for the second model we have a function c(z) instead a constant parameter, this latter model is inspired in the apparent horizon. By considering the best fit values of the cosmological parameters we show that the interaction term for each holographic model, Q, keeps positive along the cosmic evolution and exhibits a future singularity for a finite value of the redshift, this is inherited from the Hubble parameter.The temperatures for the components of the dark sector are computed and have a growing behavior in both models. The cosmic evolution in this context it is not adiabatic and the second law it is fulfilled only under certain well-established conditions for the temperatures of the cosmic components and the interacting Q-term.

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Exoplanets as Sub-GeV Dark Matter Detectors

Cited by 77 publications

References 189 publications

Production and attenuation of cosmic-ray boosted dark matter

Production and attenuation of cosmic-ray boosted dark matter

Gaia, Fundamental Physics, and Dark Matter

Holographic dark energy in curved spacetime for interacting fluids

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