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Germanium response to sub-keV nuclear recoils: a multipronged experimental characterization

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arxiv 2102.10089 v1 pith:U23FMM5T submitted 2021-02-19 nucl-ex astro-ph.COhep-exhep-ph

classification nucl-exastro-ph.COhep-exhep-ph
keywords recoilsnucleargermaniumlow-energyneutronsearchessub-kevbeam
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Germanium is the detector material of choice in many rare-event searches looking for low-energy nuclear recoils induced by dark matter particles or neutrinos. We perform a systematic exploration of its quenching factor for sub-keV nuclear recoils, using multiple techniques: photo-neutron sources, recoils from gamma-emission following thermal neutron capture, and a monochromatic filtered neutron beam. Our results point to a marked deviation from the predictions of the Lindhard model in this mostly unexplored energy range. We comment on the compatibility of our data with low-energy processes such as the Migdal effect, and on the impact of our measurements on upcoming searches.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Direct observation of coherent elastic antineutrino-nucleus scattering

    hep-ex 2025-01 conditional novelty 7.0 of 10

    CONUS+ reports the first 3.7 sigma observation of coherent elastic antineutrino-nucleus scattering at a nuclear reactor, with 395 measured events versus 347 predicted.

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