SMuK 2021 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 21: Invited Talks - IV

HK 21.1: Invited Talk

Thursday, September 2, 2021, 11:00–11:30, H1

Charming bound states of the strong interaction — •Frank Nerling — Helmholtz Forschungsakademie Hessen für FAIR (HFHF), Frankfurt, Germany

Quantum chromodynamics, the quantum field theory of the strong interaction, allows for and predicts exotic bound states beyond the simple quark model. Even though experimental searches are performed since decades, most of them were not conclusive — the reported candidates are heavily disputed in the community. The discovery of the first so-called charmonium-like (exotic) XYZ states at the beginning of the millennium, however, has initiated a new era. With the observation of tetraquark candidates, the BESIII experiment has discovered manifestly exotic states in the meson sector. Other facilities such as the upcoming PANDA experiment at FAIR offer unique possibilities to finally clarify the nature of e.g. one of the first and most famous XYZ states that still 15 years after the observation is not yet understood.