Pi0 Polarizability Meeting Dec 4, 2020

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Meeting Information

Meeting Time And Location

11:00 am ET (JLab time)



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Action Items

  1. BGGEN simulations of incoherent backgrounds (Mark)
  2. Make available code for calculation of the FF (Ilya)
  3. Provide feedback on Gervorkyan calculations (Rory, Elton,...)

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Theory Update
  4. Calculations by Sergey Gevorkyan
  5. Experiment Update
    1. Backgrounds
  6. CPP and NPP Readiness Review
  7. Trigger
  8. Other business
  9. Next meeting


Attending: Alex, Ilya, Mark Rory, Elton, Serguei

  1. Announcements
    • We have requested a Readiness Review for CPP/NPP, but have not heard back
  2. Action Items
  3. Theory Update
  4. Calculations by Sergey Gevorkyan
    • Gevorkyan et al PRC 80 (2009) 055201
    • Serguei was connected to a second screen in Ilya's office.
    • Comments to Serguei: Rory: relies heavily on Physics Rev C for PrimeX. Elton will send the paper around. Elton: There are several definitions that need clarifications. For the paper we probably want specific calculations with plots to make the paper more useful.
    • Rory: Suggests that we spend the next meeting reviewing the paper and organizing questions for Serguei.
  5. Make available code for calculation of the FF (Ilya)
    • The code has been made available on Ilya's web site.
    • There are various options for FF (Fermi, Fourier-Bessel, Sum of Gaussians). Rory: The state-of-the-art is the Fourier-Bessel parameterization and should be used as the reference.
  6. Backgrounds
    • Mark: the BGGEN jobs are failing at a 25-40% rate and it is unclear why. He will send a question into the GlueX help
  7. CPP and NPP Readiness Review
  8. Trigger
  9. Other business
  10. Next meeting
    • Dec 18 11:00 am. Review Serguei's paper and provide feedback