New constraints and prospects for sub-GeV dark matter scattering off electrons in xenon

Essig, Rouven; Volansky, Tomer; Yu, Tien-Tien

doi:10.1103/physrevd.96.043017

Cited by 396 publications

(537 citation statements)

References 70 publications

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“…data on the annihilation χχ → V V → 2(e + e − ) [52,53], the Fermi-LAT data in the direction of the dwarf spheroidal galaxies [54], the Planck CMB data which is sensitive to energy injection to the CMB from DM annihilations [55,56], and the IceCube data on DM annihilation into neutrinos [57]. It also survives the upper bounds from XENON-10 and XENON-100 experiments on the DM scattering off electron [58].…”

Section: Iv-collidermentioning

confidence: 89%

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Cao¹,

Liu²,

Guo³

et al. 2018

Eur. Phys. J. C

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Inspired by the peak structure observed by recent DAMPE experiment in e + e − cosmic-ray spectrum, we consider a scalar dark matter (DM) model with gauged U (1) L e −L μ symmetry, which is the most economical anomaly-free theory to potentially explain the peak by DM annihilation in nearby subhalo. We utilize the process χχ → Z Z → lll l , where χ , Z , l ( ) denote the scalar DM, the new gauge boson and l ( ) = e, μ, respectively, to generate the e + e − spectrum. By fitting the predicted spectrum to the experimental data, we obtain the favored DM mass range m χ 3060 +80−100 GeV and m ≡ m χ − m Z 14 GeV at 68% Confidence Level (C.L.). Furthermore, we determine the parameter space of the model which can explain the peak and meanwhile satisfy the constraints from DM relic abundance, DM direct detection and the collider bounds. We conclude that the model we consider can account for the peak, although there exists a tension with the constraints from the LEP-II bound on m Z arising from the cross section measurement of e + e − → Z * → e + e − .

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Section: Iv-collidermentioning

confidence: 89%

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Cao¹,

Liu²,

Guo³

et al. 2018

Eur. Phys. J. C

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“…We derive the bound on solar A s as discussed above. The bound on sub-GeV DM scattering off electrons based on this data will be presented in [69].…”

Section: Current Experimentsmentioning

confidence: 99%

Searching for dark absorption with direct detection experiments

Bloch

Essig

Tobioka

et al. 2017

J. High Energ. Phys.

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177

184

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We consider the absorption by bound electrons of dark matter in the form of dark photons and axion-like particles, as well as of dark photons from the Sun, in current and next-generation direct detection experiments. Experiments sensitive to electron recoils can detect such particles with masses between a few eV to more than 10 keV. For dark photon dark matter, we update a previous bound based on XENON10 data and derive new bounds based on data from XENON100 and CDMSlite. We find these experiments to disfavor previously allowed parameter space. Moreover, we derive sensitivity projections for SuperCDMS at SNOLAB for silicon and germanium targets, as well as for various possible experiments with scintillating targets (cesium iodide, sodium iodide, and gallium arsenide). The projected sensitivity can probe large new regions of parameter space. For axionlike particles, the same current direction detection data improves on previously known direct-detection constraints but does not bound new parameter space beyond known stellar cooling bounds. However, projected sensitivities of the upcoming SuperCDMS SNOLAB using germanium can go beyond these and even probe parameter space consistent with possible hints from the white dwarf luminosity function. We find similar results for dark photons from the sun. For all cases, direct-detection experiments can have unprecedented sensitivity to dark-sector particles.

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“…For the light DM that we consider here, ∼ 10 − 100 MeV, scattering off of electrons is likely to provide the greatest sensitivity [6]. Assuming a form factor of unity since m 2 DM m 2 e , this cross section can be expressed as (for either S or S † scattering) [71][72][73][74] …”

Section: Jhep07(2018)118mentioning

confidence: 99%

Kinetic mixing, dark photons and an extra dimension. Part I

Rizzo

2018

J. High Energ. Phys.

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Extra dimensions (ED) can provide a useful tool for model-building. In this paper we introduce a single, flat ED extension of the kinetic-mixing/dark photon (DP) portal for dark matter (DM) interactions with the Standard Model (SM) assuming a compactification 'radius' of order R −1 ∼ 10−1000 MeV and examine the resulting modifications to and augmentation of the usual DP phenomenology. In the present scenario, both the DP and DM experience the full 5-D while the SM fields are constrained to lie on a 4-D brane at the boundary of the ED. Such a setup can naturally yield the observed value of the DM relic density and explain the required rough degeneracy of the DM and DP masses needed to obtain it. Gauge symmetry breaking can occur via boundary conditions without the introduction of an additional singlet Higgs scalar thus avoiding all constraints associated with the coupling of such a field to the usual SM Higgs field in 5-D. The self-consistency in the removal of the kinetic mixing terms is found to lead to a brane localized kinetic term for the 5-D gauge field on the SM brane. Multiple variations of this scenario are found to be possible which are consistent with current experimental constraints but which predict very different phenomenologies. In this paper, we discuss the case of a complex scalar 5-D DM field, consistent with constraints arising from the CMB, which may or may not obtain a vacuum expectation value (vev). This approach can lead to interesting and distinctive signatures while being constrained by a wide array of existing measurements but with the details being dependent upon the model specifics.

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New constraints and prospects for sub-GeV dark matter scattering off electrons in xenon

Cited by 396 publications

References 70 publications

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Searching for dark absorption with direct detection experiments

Kinetic mixing, dark photons and an extra dimension. Part I

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