Impact of uncertainties in the halo velocity profile on direct detection of sub-GeV dark matter

Hryczuk, Andrzej; Karukes, Ekaterina; Roszkowski, Leszek; Talia, Matthew

doi:10.1007/jhep07(2020)081

Cited by 6 publications

(5 citation statements)

References 82 publications

(114 reference statements)

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“…(3). For masses of mFDM in the GeV range, observations from electron scattering do not probe the parameter space of interest [53,54], even if one considers variations in the DM velocity distribution [55][56][57]. Thus, in the following, we discuss direct detection constraints on the model from nuclear scatterings.…”

Section: Direct Detectionmentioning

confidence: 99%

Freezing In with lepton flavored fermions

et al. 2021

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Dark, chiral fermions carrying lepton flavor quantum numbers are natural candidates for freeze-in. Small couplings with the Standard Model fermions of the order of lepton Yukawas are `automatic' in the limit of Minimal Flavor Violation. In the absence of total lepton number violating interactions, particles with certain representations under the flavor group remain absolutely stable. For masses in the GeV-TeV range, the simplest model with three flavors, leads to signals at future direct detection experiments like DARWIN. Interestingly, freeze-in with a smaller flavor group such as SU(2) is already being probed by XENON1T.

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Section: Direct Detectionmentioning

confidence: 99%

Freezing In with lepton flavored fermions

et al. 2021

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“…(3). For masses of mFDM in the GeV range, observations from electron scattering do not probe the parameter space of interest [52,53], even if one considers variations in the DM velocity distribution [54][55][56]. Thus, in the following, we discuss direct detection constraints on the model from nuclear scatterings.…”

Section: A Relic Densitymentioning

confidence: 99%

Freezing In with Lepton Flavored Fermions

D'Ambrosio,

Chatterjee,

Laha

et al. 2021

Preprint

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Dark, chiral fermions carrying lepton flavor quantum numbers are natural candidates for freeze-in. Small couplings with the Standard Model fermions of the order of lepton Yukawas are 'automatic' in the limit of Minimal Flavor Violation. In the absence of total lepton number violating interactions, particles with certain representations under the flavor group remain absolutely stable. For masses in the GeV-TeV range, the simplest model with three flavors, leads to signals at future direct detection experiments like DARWIN. Interestingly, freeze-in with a smaller flavor group such as SU (2) is already being probed by XENON1T.

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“…There are several empirical approaches to the DM halo velocity profile derived from various cosmological simulations [62][63][64]. For our purposes, we will be focusing on the empirical model of refs.…”

Section: Empirical Modelsmentioning

confidence: 99%

“…[65,66] based on the DM-only simulation packages Rhapsody [67] and Bolshoi [68]. Previous work has investigated the sensitivity of DM-electron scattering on the DM velocity profile using empirical models derived from the IllustrisTNG simulations [64]. Our work is complementary given that we consider a different set of halo-models.…”

Section: Empirical Modelsmentioning

confidence: 99%

Dependence of Dark Matter - Electron Scattering on the Galactic Dark Matter Velocity Distribution

Radick,

Taki,

2020

Preprint

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The rate of dark matter-electron scattering depends on the underlying velocity distribution of the dark matter halo. Importantly, dark matter-electron scattering is particularly sensitive to the high-velocity tail, which differs significantly amongst the various dark matter halo models. In this work, we summarize the leading halo models and discuss the various parameters which enter them. We recommend updated values for these parameters based on recent studies and measurements. Furthermore, we quantify the dependence of the dark matter-electron scattering rate on the choice of halo model and parameters, and demonstrate how these choices propagate to the predicted cross-section limits. The rate is most sensitive to changes in the circular velocity v 0 ; in silicon targets, we find that the changes in the rate predictions can range from O(0.01%) to O(100%) for contact interactions and O(10%) to O(100%) for long-range interactions.

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Impact of uncertainties in the halo velocity profile on direct detection of sub-GeV dark matter

Cited by 6 publications

References 82 publications

Freezing In with lepton flavored fermions

Freezing In with lepton flavored fermions

Freezing In with Lepton Flavored Fermions

Dependence of Dark Matter - Electron Scattering on the Galactic Dark Matter Velocity Distribution

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