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Hartmut Schmieden25/06/2024, 09:00
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Annika Thiel25/06/2024, 09:30
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Nils Stausberg (HISKP)25/06/2024, 11:00
A good understanding of the spectrum and the properties of baryon resonances requires a detailed study of the excited states and their decays. To extract contributing resonances from data, cross sections and polarization observables must be determined and further investigated by partial wave analysis.
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Multi-meson final states are particularly important at high energies, where still resonances... -
Meike Küßner25/06/2024, 11:30
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Victor Kashevarov25/06/2024, 14:00
The most interesting experimental data for η and η′ photoproduction on nucleons are presented. Besides, results of the phenomenological analysis of these reactions with updated version of EtaMAID model are discussed. The model well describes both differential cross sections and polarization observables at photon beam energies from the threshold upto 9 GeV. The nature of some interesting...
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Juan Miguel Nieves Pamplona25/06/2024, 15:00
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Victoria Lagerquist25/06/2024, 16:30
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Bernhard Ketzer25/06/2024, 17:00
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Marek Karliner26/06/2024, 09:00
Recently the LHCb Collaboration announced the discovery of a new type of
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exotic hadron -- a doubly-charmed tetraquark $T_{cc}^+$, whose mass agrees
precisely with a 2017 theoretical prediction. I will discuss the recent
related experimental and theoretical developments regarding new types of
hadrons: tetraquark and pentaquark hadronic molecules, doubly heavy baryons,
stable tetraquarks... -
Sebastian Neubert26/06/2024, 10:30
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Thomas Jude (The University of Bonn)26/06/2024, 11:30
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Christoph Hanhart (Forschungszentrum Juelich)26/06/2024, 14:00
In the talk the concept of hadronic molecules is introduced and the implications of this structure illustrated on three examples: The nature of the Y(4230), the Zb states and finally the LHCb pentaquarks. In particular, it is described which features of the LHCb pentaquarks point at their possible molecular nature and what further predictions can be deduced from that property.
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Ulf-G Meißner26/06/2024, 15:00
The term two-pole structure refers to the fact that particular single states in the hadron spec- trum as listed in the PDG tables are often two states. In this talk, I will discuss in some detail the cases of the two Λ(1405) and the two $D^{0⋆}$(2300) states. I further discuss the consequences for our understanding of bound states in QCD and point out some sins committed in the current literature.
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Prof. Eulogio Oset (IFIC, Universidad de Valencia)26/06/2024, 16:30
The chiral unitary approach produces two states from the pseudoscalar-baryon decuplet interaction in the region of the $ \Xi(1820)$. A recent BESIII experiment on the $ \Psi(3868) \to \bar \Xi K^- \Lambda$ showed a clean peak that had an abnormally large width and was interpreted in [1] in terms of the two $\Xi(1820)$. In view of this, we propose to look at the $\Omega_c \to \pi^+ \,...
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Catalina Oana Curceanu (INFN-LNF)26/06/2024, 17:30
The low-energy QCD, the theory within the Standard Model describing the strong interaction, is still missing fundamental experimental results to achieve a breakthrough in its understanding. Among these, the low-energy kaon-nucleon/nuclei interaction studies are playing a key-role.
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Combining the excellent quality of the low-energy kaon beam delivered by the DAFNE collider of INFN-LNF with new... -
Carsten Urbach27/06/2024, 09:00
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Takatsugu Ishikawa (Research Center for Nuclear Physics (RCNP), Osaka University)27/06/2024, 10:30
We have studied the interaction between the eta meson and deuteron from measurement of cross sections for coherent neutral-pion and eta-meson photoproduction on the deuteron. We have found a narrow resonance-like bump in the eta-deuteron subsystem at the vicinity of the threshold, suggesting strong eta-deuteron attraction. The sharp backward-peaking angular dependence of deuteron emission,...
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Thomas Jude27/06/2024, 11:30
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Alessia Fantini (INFN (sez "Tor <vergata"), University of Rome "Tor Vergata")27/06/2024, 14:00
The Σ beam asymmetry in meson photoproduction off the nucleon is a very sensitive observable in the investigation of the nucleon structure. The BGOOD experiment at ELSA, with its linearly polarized γ beam and large solid angle detector, is an ideal facility for the detection of charged and neutral particle final states.
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New results of Σ beam asymmetry will be presented for η photoproduction... -
Lucilla Lanza27/06/2024, 14:30
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Farah Afzal27/06/2024, 16:00
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Ulrike Thoma27/06/2024, 16:30
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Boris Hippolyte27/06/2024, 17:00
STRONG-2020 succeeded in gathering a large community in Europe and beyond that focuses on all aspects of the strong interaction.
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It encompasses both fundamental research and applications using top-level infrastructures as a backbone, with the ambition of pushing further the frontier of knowledge in hadron physics.
We present at this workshop a general summary of the project which is about to... -
27/06/2024, 17:30
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Dennis Proft
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Deborah Rönchen
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Deborah Rönchen (Forschungszentrum Jülich)
In order to connect predictions for the baryon spectrum in the non-perturbative energy regime from quark models or lattice calculations to experimental data, coupled-channel frameworks are especially suited. In those approaches a simultaneous partial-wave analysis of multiple reactions with different initial and final states is performed.
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I will present recent results from the Jülich-Bonn...
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