Results from a search for light-mass dark matter with a p-type point contact germanium detector.
By C. Aalseth, P. Barbeau, N. Bowden, B. Cabrera-Palmer, J. Colaresi, J. Collar, S. Dazeley, P. D. Lurgio, G. Drake, J. Fast and 17 more. Physical Review Letters, 2010
819 citations recorded by the source corpus.
We report on several features in the energy spectrum from an ultralow-noise germanium detector operated deep underground. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss an irreducible excess of bulklike events below 3 keV in ionization energy. These could be caused by unknown backgrounds, but also dark matter interactions consistent with DAMA/LIBRA. It is not yet possible to determine their origin. Improved constraints are placed on a cosmological origin for the DAMA/LIBRA effect.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/f72ef84d80ae245f0b9032f90831f981fb62164f
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In Nuclear and High Energy Physics
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- Sohrab Rahvar
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Citations in the corpus
- The Tevatron at the frontier of dark matter direct detection (2010, background): “Another possibility that has been motivated both by DAMA and the recent CoGeNT [ 7 ] excess is that dark matter is light, below about 10GeV, and is thus transfers small momenta to nuclei giving a signal near threshold.”
- Composite scalar dark matter (2012, neutral): “Similar signals have been observed by CoGeNT [29, 30] and by CRESST-II [31], which both measure an excess of low-energy nuclear recoil events.”
- Letter of Intent: The Precision IceCube Next Generation Upgrade (PINGU) (2014, methodology): “The search for neutrinos from dark matter annihilations in the Sun will provide an independent method to test the anomalous signals from DAMA/LIBRA [89, 81], CoGeNT [85, 95], and the silicon data from CDMS-II [87] (CDMS-Si).”