Pi0 Polarizability Meeting Nov 1, 2019

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Meeting Information

Meeting Time And Location

10:00 am ET (JLab time)

CC F228


Dummy for now: You can connect using BlueJeans Video conferencing (ID: 949 429 419). (Click "Expand" to the right for details -->):

  1. Make sure you have created a BlueJeans account via your JLab CUE account using this link:

  2. Meeting ID: 949 429 419
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    • Enter meeting ID above

Action Items

  1. Event generator. Equation for g A -> g pi0 pi0
  2. Primakoff signal rate for He/Be targets (Elton)
  3. Contact theorists:
    • Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
    • Serguei Gevorkyan
    • Barbara Pasquini (Rory)

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Theory update
  4. Other business
  5. Next meeting


Attending: Elton, Ilya, Alex, Beni, Jose, Mark, Rory

  1. Announcements
    • Mark will be giving a practice talk for the SESAPS meeting this afternoon at 1 pm in F326.
  2. Action Items
    • Elton: Primakoff signal rate for He/Be. Dusted off the script using Pb to calculate the rates, but has not completed the task. Expects to have a new plot soon. Will review with Ilya to make sure the rates make sense.
    • Rory: Has sent an email to Barbara Pasquini with information about this group and a copy of the LOI. She has considered the pi0pi0 production in some papers, but has mainly worked on the CPP case. She has not replied back yet.
    • Ilya: Has been in communication with Serguei. He might be able to participate at our next meeting.
  3. Theory update
    • Theory group has setup a Google Drive for calculations.
    • Jose is working on updating his notes. He inquired what experimental information was available from the reaction. Answer: we know the energy (and direction) of incident beam. We measure the energy and angles of the four photons that reconstruct to two pi0s. Using conservation of energy one can determine kinematically fit quantities for the outgoing pions and recoil nucleus.
  4. Other business
  5. Next meeting
    • Our next meeting will be Friday Nov 15 at 10 am.