Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 29: Invited Topical Talks 2

T 29.2: Eingeladener Vortrag

Dienstag, 22. März 2022, 14:25–14:50, T-H16

Axions and similar particles - how to cover 10¹⁷ orders of magnitude in mass — •Kristof Schmieden — Johannes Gutenberg-Universität Mainz

Axions, the famous hypothetical particle that explains the absence of CP violation in QCD, was already though of in the 70ies. Yet only in the past decade the hunt for this and similar particles took up pace, which huge advancements in the recent years. The reason behind the growing interest is the understanding that axions and axion-like particles can contribute to the dark matter content of the universe. In fact, pseudo-scalar particles are a natural prediction of many extensions of the Standard model and even possibly explain the muon (g-2) anomaly. Considering the general case of pseudo-scalar particles a huge parameter space in mass and coupling to SM particles opens up, requiring a variety of experimental approaches to hunt for these particles. This talk will briefly introduce the phenomenology of axions and axion-like particles and discuss a selection of experiments and their latest results in more detail.