Blazar-Boosted Dark Matter at Super-Kamiokande

Granelli, Alessandro; Ullio, Piero; Wang, Jin-Wei

doi:10.48550/arxiv.2202.07598

Cited by 3 publications

(3 citation statements)

References 44 publications

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“…In the case of Super-Kamiokande, previous analyses assume the electrons to be free and at rest in the observer frame [38,[77][78][79]. In this work, we follow the same approach and assume the number of targets to be n t = 3.34 × FIG.…”

Section: B Super-kamiokande's Event Ratementioning

confidence: 99%

Electron scattering of light new particles from evaporating primordial black holes

Calabrese,

Chianese,

Fiorillo

et al. 2022

Preprint

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Primordial black holes are a possible component of dark matter, and a most promising way of investigating them is through the product of their Hawking evaporation. As a result of this process, any species lighter than the Hawking temperature is emitted, including possible new particles beyond the Standard Model. These can then be detected in lab-based experiments via their interaction with the Standard Model particles. In a previous work, we have first proposed and studied this scenario in the presence of an interaction between the light new species and nucleons. Here we extend this discussion to include the case of interaction with electrons. We show that the simultaneous presence of primordial black holes and species lighter than about 100 MeV can be constrained by the measurements of direct detection experiments, such as XENON1T, and water Cherenkov neutrino detectors, such as Super-Kamiokande. Our results provide a complementary and alternative way of investigation with respect to cosmological and collider searches.

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Section: B Super-kamiokande's Event Ratementioning

confidence: 99%

Electron scattering of light new particles from evaporating primordial black holes

Calabrese,

Chianese,

Fiorillo

et al. 2022

Preprint

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“…If this light dark matter (LDM) is assumed to compose all or a large fraction of the total dark matter density, strong constrains can nonetheless be obtained by estimating the CR scattering on dark matter particles. This leads to a secondary, relativistic flux which can eventually leave a sizeable recoil signature, either in direct detection experiments [5][6][7][8][9][10][11][12][13][14] or in neutrino experiments [15][16][17][18]. Alternatively, one can specified a proper model for a stable light particle which may not constitute the actual relic dark matter or only a small fraction.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric resonant production for light dark sectors

Darmé

2022

Preprint

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Cosmic ray atmospheric showers provide an effective environment for the production of MeV-scale dark sector particles. We show that, when available, the resonant annihilation of positrons from the shower on atmospheric electrons is the dominant production mechanism by more than an order of magnitude. We provide a quantitative example based on dark photon production and update existing constraints on a corresponding light dark matter model from kilotons neutrino experiments and xenon-based direct detection experiments.

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“…The morphology of DM flux is important for detection and distinguishing different mechanisms of boosted DM. For instance, DM accelerated by the Sun [63][64][65][66], supernova [67] and blazers [68] should be observed as point-like sources. The DM flux generated from inelastic scatterings between CRs and the atmosphere of the Earth [69] are expected to be isotropic.…”

mentioning

confidence: 99%

Azimuthal asymmetry in cosmic-ray boosted dark matter flux

Chen¹,

Xu²,

Zhou³

2022

Preprint

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Light halo dark matter (DM) particles up-scattered by high-energy cosmic rays (referred to as CRDM) can be energetic and become detectable at conventional DM and neutrino experiments. We show that the CRDM flux has a novel and detectable morphological feature. Unlike most of the recently proposed boosted DM (BDM) models which predict azimuthally symmetric DM fluxes around the Galactic Center, the CRDM flux breaks the azimuthal symmetry significantly. Using cosmic-ray electron distribution in the whole Galaxy and optimized search region in the sky according to the morphology of the CRDM flux, we derive so far the most stringent constraints on the DM-electron scattering cross section from the Super-Kamiokande (SK) IV data, which improves the previous constraints from the SK-IV full-sky data by more than an order of magnitude. Based on the improved constraints, we predict that the azimuthal symmetry-breaking effect can be observed in the future Hyper-Kamiokande experiment at ∼ 3σ level.

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Blazar-Boosted Dark Matter at Super-Kamiokande

Cited by 3 publications

References 44 publications

Electron scattering of light new particles from evaporating primordial black holes

Electron scattering of light new particles from evaporating primordial black holes

Atmospheric resonant production for light dark sectors

Azimuthal asymmetry in cosmic-ray boosted dark matter flux

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