Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 62: Search for New Particles V

T 62.5: Talk

Wednesday, March 17, 2021, 17:00–17:15, Tl

Prospects for a Dark Photon Search Expermiment at the ELSA Electron Accelerator — Philip Bechtle, Klaus Desch, Oliver Freyermuth, Matthias Hamer, •Jan-Eric Heinrichs, and Martin Schürmann — Rheinische Friedrich-Wilhemls-Universität Bonn

The true nature of Dark Matter (DM) has long been of interest for scientists worldwide. Previous searches have so far been unsuccessful in finding proposed DM particles. A promising and not well explored parameter space of light DM particles up to 1 GeV remains to be subjected to intense experimental testing. Mainly two approaches are investigated by the community: Beam dump and single particle-tracking fixed-target experiments, respectively. In the latter case, single electrons with a narrow energy spectrum are extracted from a storage ring or linear accelerator and tracked individually in front and behind a target, yielding sensitivity to Bremsstrahlung of invisible particles

This talks highlights the future prospects of a fixed target experiment aimed at detecting particles from one of the simplest light DM models - Dark Photons. The underlying theory and the resulting experimental challenges and strategy will be explained. The possibility of building a corresponding experiment at the ELSA electron accelerator in Bonn is highlighted. First steps towards a Geant4 simulation, including pixel based tracking with a Kalman Filter, have been taken and will be presented.