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Title: Relation between the Migdal Effect and Dark Matter-Electron Scattering in Isolated Atoms and Semiconductors

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [3]
  1. Stony Brook Univ., NY (United States)
  2. Austrian Academy of Sciences, Vienna (Austria)
  3. Univ. of Oregon, Eugene, OR (United States)

A key strategy for sub-GeV dark matter direct detection is searches for small ionization signals that arise from dark matter-electron scattering or from the “Migdal” effect in dark matter-nucleus scattering. We show that the theoretical description of both processes is closely related, allowing for a principal mapping between them. We explore this for noble-liquid targets and, for the first time, estimate the Migdal effect in semiconductors using a crystal form factor. We present new constraints using XENON10, XENON100, and SENSEI data, and give projections for proposed experiments.

Research Organization:
State Univ. of New York (SUNY), Albany, NY (United States); Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); United States-Israel Binational Science Foundation (BSF); Heising-Simons Foundation; Austrian Academy of Sciences; USDOE
Grant/Contract Number:
SC0017938; SC0018952; 2016153; 79921; 623940
OSTI ID:
1582500
Alternate ID(s):
OSTI ID: 1803197
Journal Information:
Physical Review Letters, Vol. 124, Issue 2; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

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