Discussion 09-09-24

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Meeting Location

The 22 GeV Open Discussions will be held here:

• Date/Time: Monday, September 9 at 12:30 PM Jefferson Lab Local Time
• Physical Location: CEBAF Center F224/5
• Virtual Location: Zoom Meeting Number 161 111 8017 (The password is the two-digit number that appears before "GeV" in the first sentence of this section.)

Agenda

• Opportunities for XYZ spectroscopy at JLab22 (Alessandro Pilloni)

Comments and Questions

Questions:

• Igal: Are there calculations for a neutron (deuteron) target? Yes, and can share those offline.
• Volker: Is there a functional event generator for these processes? Yes, elSpectro was written by Derek Glazier and used for several previous studies of both JLab22 and EIC.
• Matt/Patrizia: How well do we understand the non-resonant background, e.g. J/psi+N(pi) production? -> Alessandro/Adam: Phenomenological model from Double Regge approach may provide a reasonable estimate and there are plans to work on this.
• Patrizia: Are there other models on the market beyond VMD? -> Christian: maybe potential from holographic QCD approach? Guy de Teramond: reference for spectrum systematics of exotics arXiv:2012.02496
• Patrizia: How critical is an independent production mechanism compared to e+e-?
• Volker: Recalled one conclusion for CLAS from the Messina meeting was that a forward e- tagger would be important for reconstruction, what is the status similar situations for GlueX? -> Sean will present the experimental side at the next meeting, discussion to be continued.