Evaporation of dark matter from celestial bodies

Garani, Raghuveer; Palomares‐Ruiz, Sergio

doi:10.1088/1475-7516/2022/05/042

Cited by 31 publications

(21 citation statements)

References 253 publications

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“…More generally, the evaporation mass sets a lower limit on the DM mass above which these type of bounds from celestial object capture are valid. For a recent discussion see [931]. DM annihilation may produce different final states which are injected in the object core.…”

Section: Dm Capture In Celestial Bodiesmentioning

confidence: 99%

Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop “Physics Beyond Colliders meets theory”, held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.

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Section: Dm Capture In Celestial Bodiesmentioning

confidence: 99%

Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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“…and X[A(r)] ∈ [0.37−0.75] is the suppression factor due to the relative motion between Jupiter and the DM halo [16,60].…”

Section: Jhep10(2022)186mentioning

confidence: 99%

“…Since Jupiter's interior density profile is not completely known, we adopt an approximation by solving the Lane-Emden equation of the polytropic model with n = 1 [60]. The resulting density is proportional to R J sin(πr/R J )/πr.…”

Section: Jhep10(2022)186mentioning

confidence: 99%

“…The original discussion of DM evaporation could be found in [17]. In particular, the DM evaporation rate is sensitive to its exponential tail originated from either kinematic or thermal distribution even if most DM particles are trapped in a small region [60]. For DM lighter than 1 GeV, it could evaporate away before annihilation happens [60].…”

Section: Jhep10(2022)186mentioning

confidence: 99%

“…In particular, the DM evaporation rate is sensitive to its exponential tail originated from either kinematic or thermal distribution even if most DM particles are trapped in a small region [60]. For DM lighter than 1 GeV, it could evaporate away before annihilation happens [60]. The evaporation boundary varies with σ χn and Jupiter density profile.…”

Section: Jhep10(2022)186mentioning

confidence: 99%

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Jupiter missions as probes of dark matter

Fan

2022

J. High Energ. Phys.

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Jupiter, the fascinating largest planet in the solar system, has been visited by nine spacecraft, which have collected a significant amount of data about Jovian properties. In this paper, we show that one type of the in situ measurements on the relativistic electron fluxes could be used to probe dark matter (DM) and dark mediator between the dark sector and our visible world. Jupiter, with its immense weight and cool core, could be an ideal capturer for DM with masses around the GeV scale. The captured DM particles could annihilate into long-lived dark mediators such as dark photons, which subsequently decay into electrons and positrons outside Jupiter. The charged particles, trapped by the Jovian magnetic field, have been measured in Jupiter missions such as the Galileo probe and the Juno orbiter. We use the data available to set upper bounds on the cross section of DM scattering off nucleons, σχn, for dark mediators with lifetime of order $$ \mathcal{O} $$ O (0.1–1) s. The results show that data from Jupiter missions already probe regions in the parameter space un- or under-explored by existing DM searches, e.g., constrain σχn of order (10−41–10−39) cm2 for 1 GeV DM dominantly annihilating into e+e− through dark mediators. This study serves as an example and an initial step to explore the full physics potential of the large planetary datasets from Jupiter missions. We also outline several other potential directions related to secondary products of electrons, positron signals and solar axions.

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Dark matter bound-state formation in the Sun

Chu,

Garani,

García-Cely

et al. 2024

J. High Energ. Phys.

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The Sun may capture asymmetric dark matter (DM), which can subsequently form bound-states through the radiative emission of a sub-GeV scalar. This process enables generation of scalars without requiring DM annihilation. In addition to DM capture on nucleons, the DM-scalar coupling responsible for bound-state formation also induces capture from self-scatterings of ambient DM particles with DM particles already captured, as well as with DM bound-states formed in-situ within the Sun. This scenario is studied in detail by solving Boltzmann equations numerically and analytically. In particular, we take into consideration that the DM self-capture rates require a treatment beyond the conventional Born approximation. We show that, thanks to DM scatterings on bound-states, the number of DM particles captured increases exponentially, leading to enhanced emission of relativistic scalars through bound-state formation, whose final decay products could be observable. We explore phenomenological signatures with the example that the scalar mediator decays to neutrinos. We find that the neutrino flux emitted can be comparable to atmospheric neutrino fluxes within the range of energies below one hundred MeV. Future facilities like Hyper-K, and direct DM detection experiments can further test such scenario.

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Evaporation of dark matter from celestial bodies

Cited by 31 publications

References 253 publications

Feebly-interacting particles: FIPs 2020 workshop report

Feebly-interacting particles: FIPs 2020 workshop report

Jupiter missions as probes of dark matter

Dark matter bound-state formation in the Sun

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