12-15 April 2021
GSI, Darmstadt/Germany
Europe/Berlin timezone
The workshop will definitely take place at the mentioned date. Whether the presence component will be possible, will be evaluated and decided early March 2021.

While a majority of the community agrees that the XYZ states have a  non-q̄q nature, the internal structure of these states is not yet understood. To deepen our understanding in this field, additional experimental and theoretical studies are needed. For example, complete spin multiplets should be studied; to distinguish true resonance signals from kinematic effects, the confirmation of states in different experiments is needed; resonance shape measurements are compulsory to access the long ranged parts of the exotic wave functions.
At present most experimental information comes from Belle (II) (Japan), BESIII (China) and LHCb (CERN). The gluon-rich process of pp̄  annihilation as it will be available for the upcoming PANDA experiment at the FAIR facility (Germany) promises new and complementary insights. The workshop focusses on the status and future perspectives in the field of exotic hadrons in the heavy quarkonium mass region.

Confirmed invited speakers:

Experiment Talk (title)
Peter Braun-Munzinger "Charmonia and XYZ at ALICE"
Sean Dobbs "Study charmonia and hybrids with GlueX"
Simon Eidelmann "Future relevant experiments"
Alexey Guskov "COMPASS results on XYZ states"
Zhiqing Liu "BESIII results on X and Z states"
Roman Mizuk "Belle(II) XYZ results in the B sector"
Sebastian Neubert "LHCb results on exotic charmonia"
Marco Pappagallo "LHCb results on (ordinary) charmonia and bottomonia"
Cheng-Ping Shen "Belle(II) XYZ results in the charm sector"
Chengzeng Yuan "BESIII results on vector Y states"
Theory Talk (title)
Eric Braaten "Production of X(3872)"
Nora Brambilla "Effective field theories for regular quarkonia and exotics"
Feng-Kun Guo "Triangle Singularities"
Luciano Maiani "Tetraquarks"
Ulf-G. Meißner "Hadronic Molecules"
Alessandro Pilloni "Production of X(3872)"
Sinead Ryan "Lattice QCD in the doubly heavy sector" 
Marc  Vanderhaegen "Inclusion of pi pi interactions in heavy meson decays"


GSI, Darmstadt/Germany
SB 1 - Lecture Hall
GSI Helmholtzzentrum für Schwerionenforschung GmbH Planckstrasse 1 64291 Darmstadt Germany

Limited travel funds are available, please contact the organizers.

Anmeldung / Registration
Die Anmeldung für diese Veranstaltung ist offen. / Registration for this event is currently open.