New germanium Compton scattering data at 180 eV/c to 25 keV/c momentum transfer favor the Geant4 Livermore model, reject the Monash model at up to 7.7 sigma, and support an MCDF-based scattering function that raises predicted dark matter backgrounds by 10-50%.
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Germanium Atomic Compton Scattering Measurements and ${ab}$ ${initio}$ Many-Body Calculations: Implications for Electronic recoil Dark Matter Detection
New germanium Compton scattering data at 180 eV/c to 25 keV/c momentum transfer favor the Geant4 Livermore model, reject the Monash model at up to 7.7 sigma, and support an MCDF-based scattering function that raises predicted dark matter backgrounds by 10-50%.