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

Physical Review Letters
M CrislerSENSEI Collaboration

Abstract

The Sub-Electron-Noise Skipper CCD Experimental Instrument (SENSEI) uses the recently developed Skipper-CCD technology to search for electron recoils from the interaction of sub-GeV dark matter particles with electrons in silicon. We report first results from a prototype SENSEI detector, which collected 0.019 g day of commissioning data above ground at Fermi National Accelerator Laboratory. These commissioning data are sufficient to set new direct-detection constraints for dark matter particles with masses between ∼500  keV and 4 MeV. Moreover, since these data were taken on the surface, they disfavor previously allowed strongly interacting dark matter particles with masses between ∼500  keV and a few hundred MeV. We discuss the implications of these data for several dark matter candidates, including one model proposed to explain the anomalously large 21-cm signal observed by the EDGES Collaboration. SENSEI is the first experiment dedicated to the search for electron recoils from dark matter, and these results demonstrate the power of the Skipper-CCD technology for dark matter searches.

References

Aug 27, 2011·Physical Review Letters·J AngleUNKNOWN XENON10 Collaboration
Oct 4, 2012·Physical Review Letters·Rouven EssigTomer Volansky
Apr 22, 2017·Physical Review Letters·A Aguilar-ArevaloUNKNOWN DAMIC Collaboration
Jan 18, 2018·Physical Review Letters·Javier TiffenbergTien-Tien Yu
Jul 22, 2018·Physical Review Letters·Guido D'AmicoAlessandro Strumia
Jul 22, 2018·Physical Review Letters·Asher BerlinSamuel D McDermott
Aug 8, 2018·Physical Review Letters·Maxim PospelovAlfredo Urbano
Aug 18, 2018·Physical Review Letters·R AgneseX Zhao

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Citations

May 2, 2020·Physical Review Letters·Raffaele Tito D'AgnoloPo-Jen Wang
Oct 13, 2018·Physical Review Letters·Amit BhoonahSarah Schon
May 31, 2019·Physical Review Letters·Yohei EmaRyosuke Sato
Jan 25, 2020·Physical Review Letters·Asher BerlinNatalia Toro
Nov 17, 2020·Physical Review Letters·Fernando MonteiroDavid C Moore
May 8, 2021·Physical Review Letters·Rebecca K Leane, Juri Smirnov

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