Difference between revisions of "Pi0 Polarizability Meeting Apr 3, 2020"

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(Minutes)
(Minutes)
 
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# Experiment update
 
# Experiment update
 
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4407 Flat  files for Amptools] (Elton)
 
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4407 Flat  files for Amptools] (Elton)
 +
##* Elton asked about the origin of the sin^2theta factor in the NC cross section. Rory: Primakoff also has that factor and is universal. Jose: see notepad.
 +
##* The range of -t in the flat distribution is reflected in the "missing-mass" distribution. Would like to get feedback from Alex about best distribution to use.
 
# Updates to collaboration draft
 
# Updates to collaboration draft
 
## Backgrounds to be simulated
 
## Backgrounds to be simulated
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# Other business
 
# Other business
 
# Next meeting
 
# Next meeting
 +
#* Next Friday, April 10, 10 am.

Latest revision as of 11:30, 3 April 2020

Meeting Information

Meeting Time And Location

10:00 am ET (JLab time)

REMOTE

Connecting

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
    • (you may need to type this in, depending how you connect)

  3. If connecting via Web Browser: click this link (no passcode is needed):

  4. If connecting via iOS or Android App:
    • Use your JLab e-mail address to log in and then enter the meeting ID given above to join the meeting

  5. If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"

  6. If connecting via Polycom unit:
    • Dial 199.48.152.152 or bjn.vc
    • Enter meeting ID above


Action Items

  1. ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
  2. Follow-up contact with Marc (Rory)

Tentative Agenda

  1. Announcements
  2. Action Items
    1. email from Marc Vanderhaeghen
  3. Theory update
  4. Experiment update
    1. Flat files for Amptools (Elton)
  5. Updates to collaboration draft
    1. Backgrounds to be simulated
      • Background hits
      • BGGEN (PYTHIA)
      • eta production
    2. Experiment optimization
      • Target position (Beni)
      • Generate angular distributions for some other targets to compare to Pb
    3. Significance of experiment
      • The expected uncertainties of the extracted gg->pi0pi0 cross section (Fig. 24 of proposal) need to be verified and studied more carefully
    4. Analysis of PRIMEX data
  6. Other business
  7. Next meeting

Minutes

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

  1. Announcements
  2. Action Items
    1. email from Marc Vanderhaeghen
    2. Rory will ask Marc to provide a paragraph for the proposal.
  3. Theory update
    1. Non-flip amplitude (Jose's notepad)
  4. Experiment update
    1. Flat files for Amptools (Elton)
      • Elton asked about the origin of the sin^2theta factor in the NC cross section. Rory: Primakoff also has that factor and is universal. Jose: see notepad.
      • The range of -t in the flat distribution is reflected in the "missing-mass" distribution. Would like to get feedback from Alex about best distribution to use.
  5. Updates to collaboration draft
    1. Backgrounds to be simulated
      • Background hits
      • BGGEN (PYTHIA)
      • eta production
    2. Experiment optimization
      • Target position (Beni)
      • Generate angular distributions for some other targets to compare to Pb
    3. Significance of experiment
      • The expected uncertainties of the extracted gg->pi0pi0 cross section (Fig. 24 of proposal) need to be verified and studied more carefully
    4. Analysis of PRIMEX data
  6. Other business
  7. Next meeting
    • Next Friday, April 10, 10 am.