Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 66: Neutrino Physics IV

T 66.3: Talk

Thursday, March 19, 2026, 16:45–17:00, AudiMax

Status of Theia simulations — •Johann Martyn, Amala Augusthy, Noah Goehlke, Alfons Weber, and Michael Wurm — Johannes Gutenberg-University Mainz

Theia is a large-scale neutrino detector concept, designed to simultaneously exploit Cherenkov and scintillation light, potentially enabling a broad range of physics goals. The detector concept leverages recent advancments for the separation of Cherenkov and scintillation light, such as water-based liquid scintillator (WbLS), fast photo-detectors, dichroicons, and novel reconstruction techniques. This allows for the reconstruction of the particle direction, as well as particle identification via Cherenkov light while providing an enhanced energy resolution and low energy threshold from the scintillation. The proposed scientific program includes long-baseline neutrino oscillation measurements and CP violation searches, precision solar neutrino studies, search for the diffuse supernova neutrino background (DSNB), and ultimately neutrinoless double beta decay. This talk presents an overview of Theia and the current status of the Geant4 based Theia simulation framework, focusing on the ongoing efforts to optimize the detector configurations.

Keywords: Neutrino detector; Hybrid event detection