Coherent photon scattering background in sub- GeV/c2 direct dark matter searches

Robinson, Alan E.

doi:10.1103/PhysRevD.95.021301

Title: Coherent photon scattering background in sub- $GeV / c^{2}$ direct dark matter searches

Journal Article · 18 January 2017 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.95.021301 · OSTI ID:1336412

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Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Here, proposed dark matter detectors with eV-scale sensitivities will detect a large background of atomic (nuclear) recoils from coherent photon scattering of MeV-scale photons. This background climbs steeply below ~10 eV, far exceeding the declining rate of low-energy Compton recoils. The upcoming generation of dark matter detectors will not be limited by this background, but further development of eV-scale and sub-eV detectors will require strategies, including the use of low nuclear mass target materials, to maximize dark matter sensitivity while minimizing the coherent photon scattering background.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1336412

Report Number(s):: FERMILAB-PUB--16-474-A; arXiv:1610.07656; 1494349

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 2 Vol. 95; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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