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CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

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arxiv 1309.3259 v3 pith:IWXMLMKF submitted 2013-09-12 physics.ins-det astro-ph.COastro-ph.IMhep-ex

CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment

classification physics.ins-det astro-ph.COastro-ph.IMhep-ex
keywords calorimetriccdmsliteenergyexperimentionizationsupercdmswimpsallows
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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SuperCDMS is an experiment designed to directly detect Weakly Interacting Massive Particles (WIMPs), a favored candidate for dark matter ubiquitous in the Universe. In this paper, we present WIMP-search results using a calorimetric technique we call CDMSlite, which relies on voltage- assisted Luke-Neganov amplification of the ionization energy deposited by particle interactions. The data were collected with a single 0.6 kg germanium detector running for 10 live days at the Soudan Underground Laboratory. A low energy threshold of 170 eVee (electron equivalent) was obtained, which allows us to constrain new WIMP-nucleon spin-independent parameter space for WIMP masses below 6 GeV/c2.

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