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Bonn 2020 – scientific programme

The DPG Spring Meeting in Bonn had to be cancelled! Read more ...

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T: Fachverband Teilchenphysik

T 54: Axion like particles I

T 54.3: Talk

Wednesday, April 1, 2020, 17:00–17:15, H-HS XV

Search for Axion-Like Particles at BESIII — •Julian Walter, Achim Denig, and Christoph Florian Redmer for the BESIII collaboration — Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Deutschland

Axions or axion-like particles (ALPs) are hypothetical elementary particles proposed by theoretical approaches to extend the Standard Model of particle physics. While initially postulated as a solution to the strong CP problem of Quantum Chromodynamics, the existence of such a particle a could contribute to our understanding of other unsolved problems of modern particle physics. One such example is the anomalous magnetic moment of the muon aµ, where the experimentally measured value deviates from the theoretical prediction by 3−4σ. Furthermore, ALPs are considered promising candidates for cold Dark Matter.

The BESIII experiment at the BEPCII e+e collider in Beijing, China, offers a great opportunity to investigate the possible production of ALPs in two-photon fusion reactions, assuming a subsequent decay a → γ γ. This contribution will present a feasibility study of such investigations — Supported by DFG SFB 1044.

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