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Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 19: Hadron Structure and Spectroscopy III

HK 19.6: Talk

Monday, March 28, 2022, 17:30–17:45, HK-H8

4-quark states from functional methods — •Joshua Hoffer1,2 and Christian S. Fischer1,21Institut für Theoretische Physik, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany — 2Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSIHelmholtzzentrum für Schwerionenforschung, Campus Gießen, 35392 Gießen, Germany

Since the discovery of tetraquarks, there has been a lot of excitement around this topic from the theoretical as well as the experimental side. To study the poperties of these 4-quark states we use a functional framework which combines (truncated) Dyson-Schwinger and Bethe-Salpeter equations in Landau gauge. This approach allows us to extract qualitative results for mass spectra, decay widths and wavefunctions of tetraquark candidates. Furthermore, we can investigate the possible internal structure of such states. We report on recent developments and results using this functional framework and give an overview about the current status as well as future developments.

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