Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 19: Search for Dark Matter I

T 19.7: Vortrag

Montag, 31. März 2025, 18:15–18:30, VG 4.102

Study of Low Energy Excess in the CRESST experiment — •Eleonora Rebecca Cipelli — Max Planck Institute für Physik

The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment operates Transition Edge Sensors (TESs) at millikelvin temperatures to directly search for dark matter, with a focus on the sub-GeV mass range. Located in the ultra-low-background environment of the Laboratori Nazionali del Gran Sasso (LNGS) in Italy, CRESST is one of the leading experiments in the field thanks to its extremely low energy threshold. However, its sensitivity is affected by an increasing event rate at low energies (below ~200eV), known as the Low Energy Excess, whose origin remains unclear. While several potential causes have been ruled out, ongoing measurements and efforts to develop new detector designs aim to provide deeper insights into these observations. In this talk, the studies and latest results of Low Energy Excess performed by CRESST are presented.

Keywords: dark matter; Low Energy Excess; CRESST; TES; cryogenics