Low-Energy Compton Scattering in Materials

Autor:	Essig, Rouven, Hochberg, Yonit, Shoji, Yutaro, Singal, Aman, Suczewski, Gregory
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Low-energy Compton scattering is an important background for sub-GeV dark matter direct-detection and other experiments. Current Compton scattering calculations typically rely on assumptions that are not valid in the low-energy region of interest, beneath ~ 50 eV. Here we relate the low-energy Compton scattering differential cross section to the dielectric response of the material. Our new approach can be used for a wide range of materials and includes all-electron, band structure, and collective effects, which can be particularly relevant at low energies. We demonstrate the strength of our approach in several solid-state systems, in particular Si, Ge, GaAs, and SiC, which are relevant for current and proposed experiments searching for dark matter, neutrinos, and millicharged particles. Comment: 5 figures, 9 pages + references
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2310.02316 Zobrazit plný text záznamu View this record from Arxiv