Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 43: Computing and Outreach

HK 43.3: Talk

Thursday, March 19, 2026, 16:45–17:00, PHIL B 604

Discover the Z_c(3900) - a BESIII Masterclass — •Nils Hüsken, Achim Denig, Thomas Lenz, Saskia Plura, and Heike Vormstein — Johannes Gutenberg-Universität Mainz

An electron-positron collider like BEPCII provides clean collisions with a small number of particles in the final state. These can be measured and identified with a detector like BESIII applying just a few general principles that are common to many modern particle physics experiments. At the same time, one of the high-profile results of more than 15 years of running BESIII - the discovery of the exotic hadron Z_c(3900) - really only requires to separate leptons from pions and use energy-momentum conservation to obtain a sizable signal. In combination, our experiment is thus ideally suited for outreach activities. In this talk, we will discuss a new Masterclass using data from the BESIII experiment to (re-)discover the Z_c(3900), highlighting a modern breakthrough in hadron spectroscopy from one of the leading experiments in the field.

Keywords: BESIII; Zc(3900); Masterclass; Netzwerk Teilchenwelt; Exotic hadrons