Semiconductor probes of light dark matter

Graham, Peter W.; Kaplan, David E.; Rajendran, Surjeet; Walters, Matthew T.

doi:10.1016/j.dark.2012.09.001

Cited by 215 publications

(211 citation statements)

References 74 publications

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“…Greater sensitivity to lighter DM for a given deposited energy can be achieved via inelastic processes, such as electron ionization or excitation [20][21][22]. In this case, the process may be catalyzed if the incoming DM kinetic energy, E kin = m X v 2 X /2, exceeds the…”

Section: Jhep08(2016)057mentioning

confidence: 99%

Detecting superlight dark matter with Fermi-degenerate materials

Hochberg

Pyle

Zhao

et al. 2016

J. High Energ. Phys.

203

239

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We examine in greater detail the recent proposal of using superconductors for detecting dark matter as light as the warm dark matter limit of O(keV). Detection of such light dark matter is possible if the entire kinetic energy of the dark matter is extracted in the scattering, and if the experiment is sensitive to O(meV) energy depositions. This is the case for Fermi-degenerate materials in which the Fermi velocity exceeds the dark matter velocity dispersion in the Milky Way of ∼ 10 −3 . We focus on a concrete experimental proposal using a superconducting target with a transition edge sensor in order to detect the small energy deposits from the dark matter scatterings. Considering a wide variety of constraints, from dark matter self-interactions to the cosmic microwave background, we show that models consistent with cosmological/astrophysical and terrestrial constraints are observable with such detectors. A wider range of viable models with dark matter mass below an MeV is available if dark matter or mediator properties (such as couplings or masses) differ at BBN epoch or in stellar interiors from those in superconductors. We also show that metal targets pay a strong in-medium suppression for kinetically mixed mediators; this suppression is alleviated with insulating targets.

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Section: Jhep08(2016)057mentioning

confidence: 99%

Detecting superlight dark matter with Fermi-degenerate materials

Hochberg

Pyle

Zhao

et al. 2016

J. High Energ. Phys.

203

239

View full text Add to dashboard Cite

show abstract

“…Such DM can be probed at colliders [10][11][12][13][14][15], at direct detection experiments [9,16,17], and at proton-and electron-beam dumps [18][19][20][21][22][23]. Constraints from the Cosmic Microwave Background (CMB) already limit the s-wave DM annihilation cross section to SM matter to be below that of a thermal WIMP, for DM masses below ∼ 7 GeV [24][25][26][27].…”

Section: Jhep11(2013)193mentioning

confidence: 99%

Constraining light dark matter with diffuse X-ray and gamma-ray observations

Essig

Kuflik

McDermott

et al. 2013

J. High Energ. Phys.

315

431

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We present constraints on decaying and annihilating dark matter (DM) in the 4 keV to 10 GeV mass range, using published results from the satellites HEAO-1, INTEGRAL, COMPTEL, EGRET, and the Fermi Gamma-ray Space Telescope. We derive analytic expressions for the gamma-ray spectra from various DM decay modes, and find lifetime constraints in the range 10 24 − 10 28 sec, depending on the DM mass and decay mode. We map these constraints onto the parameter space for a variety of models, including a hidden photino that is part of a kinetically mixed hidden sector, a gravitino with Rparity violating decays, a sterile neutrino, DM with a dipole moment, and a dark pion. The indirect constraints on sterile-neutrino and hidden-photino DM are found to be more powerful than other experimental or astrophysical probes in some parts of parameter space. While our focus is on decaying DM, we also present constraints on DM annihilation to electron-positron pairs. We find that if the annihilation is p-wave suppressed, the galactic diffuse constraints are, depending on the DM mass and velocity at recombination, more powerful than the constraints from the Cosmic Microwave Background.

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“…Consequently, the bounds on leptophilic DM which scatter with the electrons in the atoms are weak [3]. There are well motivated models of leptophilic DM with mass in the sub GeV range [4][5][6][7][8] and it will be of interest to put constraints on the scattering cross section from observations.…”

Section: Introductionmentioning

confidence: 99%

Constraints on leptophilic light dark matter from internal heat flux of Earth

Chauhan

Mohanty

2016

Phys. Rev. D

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Dark Matter in Earth intersecting orbits can scatter off the electrons and lose energy, and finally be gravitationally bound to Earth. Eventually they lose enough energy and accumulate at the core. It is assumed that DM annihilates/decays predominantly into Standard Model particles inside Earth. The heat flux from these processes is compared with the experimentally measured value of internal heat flux of Earth which is 44 TW. Assuming steady state between capture and annihilation/decay, we put constraints on the scattering cross section of DM with electrons as a function of their mass. For low mass regions (< 10 −2 GeV), these constraints on leptophilic DM are better than ones obtained from direct-detection experiments.

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Semiconductor probes of light dark matter

Cited by 215 publications

References 74 publications

Detecting superlight dark matter with Fermi-degenerate materials

Detecting superlight dark matter with Fermi-degenerate materials

Constraining light dark matter with diffuse X-ray and gamma-ray observations

Constraints on leptophilic light dark matter from internal heat flux of Earth

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