Pi0 Polarizability Meeting Oct 9, 2020
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Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
REMOTE
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Action Items
- ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
- BGGEN simulations of incoherent backgrounds (Mark)
- Calculations by Sergey Gevorkyan
Tentative Agenda
- Announcements
- Action Items
- PAC48
- Theory Update
- Beam Test
- Other business
- Next meeting
Minutes
Attending: Elton, Alex A, Rory, Ilya, Jose, Beni
- Announcements
- Action Items
- PAC48
- GlueX Endorsement
- PAC48 Final Report
- NPP and CPP were favorably reviewed by the PAC and we are encouraged to run the experiment in 2022.
- Theory Update
- Calculations by Sergey Gevorkyan
- Ilya gave an update on Sergey's efforts
- There is a draft writeup, representing the work to date. These results were available in June, but not in time to include into the PAC submission
- The calculations are based on the PRIMEX formalism with modifications for two pion production.
- We are asked to read the draft and provide feedback to Sergey. He is also looking for help with numerical calculations.
- We promise to provide feedback in the next couple of weeks.
- Beam Test (Ilya)
- Draft Beam Test Report
- See Section 5 on FCAL trigger. Estimated FCAL trigger at 20 nA and NPP radiator is 13 kHz (no DIRC or Pb shield). The FCAL threshold is about > 0.7 GeV (nominally 0.5 GeV).
- These rates are quite acceptable and may allow us to run at somewhat higher current.
- Other business
- Next meeting
- Due to the collaboration meeting in two weeks, we will not meet again till Nov 6.