Pi0 Polarizability Meeting Sep 27, 2019

Meeting Information

Meeting Time And Location

10:00 am ET (JLab time)

CC F228

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Action Items

1. Experimental priority list and how to address them
2. Contact theorists:
   • Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
   • Serguei Gevorkyan
   • Barbara Pasquini
3. Provide a t distribution for pi0 Primakoff (Elton)

Tentative Agenda

1. Announcements
2. Action Items
3. Look at (PRIMEX) Be target data (Ilya)
   1. First look at Be data pdf
   2. FCAL only acceptance for 0.5GeV single gamma energy cut and different production angles and 2pi0 inv. mass values acceptance plots. Beam energy: Blue - 4GeV, Black - 6GeV, Red - 8GeV, Green - 10GeV
   3. 2pi0 production on Be yield comparison: 0.5GeV single gamma energy cut, extra events from reducting FCAL energy cut to 0.3GeV plot
4. Experimental Issues for Proposal
   1. Event generator: Do we need to upgrade our model?
   2. Systematic assessment of backgrounds: f0(500), gA->Aeta, eta->pi0pi0(pi0), incoherent gp->pi0pi0 p
   3. Additional analysis of hydrogen data (Beni)?
   4. Experimental Configuration for CPP
   5. Optimization of running time: time, target(s), beam energy, compatibility with CPP
5. Other business
6. Next meeting

Minutes

Attending: