SENSEI: First Direct-Detection Constraints on Sub-GeV Dark Matter from a Surface Run

Crisler, M. B.; Fernández, Guillermo García; Tiffenberg, J.; Volansky, Tomer; Estrada, J.; Yu, Tien-Tien; Essig, Rouven; Haro, Miguel Sofo

doi:10.1103/physrevlett.121.061803

Cited by 230 publications

(231 citation statements)

References 80 publications

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“…Models such as these have been hypothesized to explain recent astronomical observations [49], and thus these surface-facility direct detection limits may augment other astrophysical constraints once DM survival probabilities and atmospheric absorption are more fully quantified [50,51]. Recent results using smaller exposures in Si CCDs, with sensitivity in this same mass range, explore these surface limits further [52].…”

Section: Physical Review Letters 121 051301 (2018)mentioning

confidence: 92%

First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Agnese¹,

Aralis²,

Aramaki³

et al. 2018

Phys. Rev. Lett.

275

209

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Section: Physical Review Letters 121 051301 (2018)mentioning

confidence: 92%

First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Agnese¹,

Aralis²,

Aramaki³

et al. 2018

Phys. Rev. Lett.

275

209

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“…First, the updated measurements for the quenching factor in [42] reduce significantly the expected signal compared to the Lindhard model [47]. The CONNIE collaboration is working to reduce the uncertainty in the quenching factor, in collaboration with other teams using silicon targets for the detection of nuclear recoils [17,20,21,53]. The second is the lower detection efficiency than the estimations used for the forecast in [37].…”

Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Exploring low-energy neutrino physics with the Coherent Neutrino Nucleus Interaction Experiment

Aguilar-Arevalo¹,

Bertou²,

Bonifazi³

et al. 2019

Phys. Rev. D

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110

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The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) uses low-noise fully depleted charge-coupled devices (CCDs) with the goal of measuring low-energy recoils from coherent elastic scattering (CEνNS) of reactor antineutrinos with silicon nuclei. This standard model process has not yet been observed at recoil energies below 20 keV. We report here the first results of the detector array deployed in 2016, with an active mass of 73.2 g (12 CCDs), which is operating at a distance of 30 m from the core of the Angra 2 nuclear reactor, with a thermal power of 3.8 GW. A search for neutrino events is performed by comparing data collected with reactor on (2.1 kg-day) and reactor off (1.6 kg-day). The results show no excess in the reactor-on data, reaching the world record sensitivity down to recoil energies of about 1 keV (0.1 keV electron-equivalent). A 95% confidence level limit for new physics is established at an event rate of 40 times the one expected from the standard model at this energy scale. The results presented here provide a new window to the low-energy neutrino physics, which allows one to explore for the first time the lowest energies accessible through the CEνNS with antineutrinos from nuclear reactors.

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“…These limits assume that the interacting DM component, χ, makes up the entire DM abundance (f χ ≡ Ω χ /Ω DM = 100%). While converting the DM-baryon cross section limits derived in [59] to the DM-electron cross section, we have used the Debye screening length of the baryon plasma to regulate the divergence for small Figure 4: Constraints on the DM-electron scattering cross section for XENON10 [25,49], XENON100 [25,50], SENSEI (pro-toSENSEI@surface [33] and protoSEN-SEI@MINOS [35]), DarkSide-50 [51], and CDMS-HVeV (as for SENSEI, we show the constraint without Fano-factor fluctuations, which is the upper boundary of the constraint band shown in [34]). The dashed lines show the upper boundary for the constraints obtained with electronic stopping only.…”

Section: Constraintsmentioning

confidence: 99%

Direct detection of strongly interacting sub-GeV dark matter via electron recoils

Emken

Essig

Kouvaris

et al. 2019

J. Cosmol. Astropart. Phys.

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148

121

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We consider direct-detection searches for sub-GeV dark matter via electron scatterings in the presence of large interactions between dark and ordinary matter. Scatterings both on electrons and nuclei in the Earth's crust, atmosphere, and shielding material attenuate the expected local dark matter flux at a terrestrial detector, so that such experiments lose sensitivity to dark matter above some critical cross section. We study various models, including dark matter interacting with a heavy and ultralight dark photon, through an electric dipole moment, and exclusively with electrons. For a darkphoton mediator and an electric dipole interaction, the dark matter-electron scattering cross-section is directly linked to the dark matter-nucleus cross section, and nuclear interactions typically dominate the attenuation process. We determine the exclusion bands for the different dark-matter models from several experiments -SENSEI, CDMS-HVeV, XENON10, XENON100, and DarkSide-50 -using a combination of Monte Carlo simulations and analytic estimates. We also derive projected sensitivities for a detector located at different depths and for a range of exposures, and calculate the projected sensitivity for SENSEI at SNOLAB and DAMIC-M at Modane. Finally, we discuss the reach to high cross sections and the modulation signature of a small balloon-and satellite-borne detector sensitive to electron recoils, such as a Skipper-CCD. Such a detector could potentially probe unconstrained parameter space at high cross sections for a sub-dominant component of dark matter interacting with a massive, but ultralight, dark photon.

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SENSEI: First Direct-Detection Constraints on Sub-GeV Dark Matter from a Surface Run

Cited by 230 publications

References 80 publications

First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Exploring low-energy neutrino physics with the Coherent Neutrino Nucleus Interaction Experiment

Direct detection of strongly interacting sub-GeV dark matter via electron recoils

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