Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 3: Search for new particles 2

T 3.7: Talk

Monday, March 4, 2024, 17:30–17:45, Geb. 20.30: 2.058

Exploring dark sector physics at a high energy photon-photon collider — •Monika Wüst, Marten Berger, and Gudrid Moortgat-Pick — Universität Hamburg, Hamburg, Germany

We study the prospects of a future high energy gamma-gamma collider to probe dark sector models. The existence of a dark sector can be explored through different portal interactions, known portals include couplings of SM particles to dark photon, dark Higgs and Axion-Like-Particles (ALPs). We consider combined scenarios such as the Dark-Axion-Portal, where both the dark photon (γ′) and ALP coexist in the hidden sector, given rise to a rich phenemology.

Probing these models with a gamma-gamma collider via processes such as photon fusion to ALPs is investigated, where the high energy photons can be generated using backward Compton scattering of laser photons off high-energy electron beams.

Keywords: Dark sector; Dark Photon; Gamma-Gamma collider