Difference between revisions of "Pi0 Polarizability Meeting Apr 24, 2020"

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# Action Items
 
# Action Items
 
# Feedback from collaboration review
 
# Feedback from collaboration review
−
## [[Feedback from Barry / Tue Apr 14]]
 
−
##* Rory: The estimate of the incoherent is not easy, but should be uniform in Phi, so polarization is a valuable tool.
 
−
## [[Feedback from Joerg]]
 
−
##* We need to clarify that CPP will run with a Pb target and we need an estimate of the calorimeter trigger rate to insure that NPP can run concurrently with CPP. Ilya was volunteered for this task.
 
 
# Theory update
 
# Theory update
−
## [[Discussion with Serguei Gevorkyan / Mon Apr 13]]
 
 
# Experiment update
 
# Experiment update
−
## [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4433 GlueX-doc-4433] Eta background (Elton)
 
 
# Updates to collaboration draft
 
# Updates to collaboration draft
−
## Backgrounds to be simulated
+
## [[Media:Screen Shot 2020-04-24 at 9.50.49 AM.png | Backgrounds to be simulated]]
 
##* Background hits
 
##* Background hits
 
##* BGGEN (PYTHIA)
 
##* BGGEN (PYTHIA)
 
##* eta production (Elton)
 
##* eta production (Elton)
−
##* Incoherent production (Elton)
+
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4439 Incoherent production] (Elton)
 
##* Npipi
 
##* Npipi
 
## Table of cross sections (Rory and Ilya)
 
## Table of cross sections (Rory and Ilya)
Line 78: Line 72:
  
 
= Minutes =
 
= Minutes =
−
''Attending:
+
''Attending: Alex, Svetlana, Elton, Beni, Mark, Rory, Jose, Ilya
 +
 
 +
# Announcements
 +
# Action Items
 +
# Feedback from collaboration review
 +
# Theory update
 +
# Experiment update
 +
# Updates to collaboration draft
 +
## Backgrounds to be simulated
 +
##* Background hits
 +
##* BGGEN (PYTHIA)
 +
##* eta production (Elton)
 +
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4439 Incoherent production] (Elton)
 +
##* Npipi
 +
## [[Media:Screen Shot 2020-04-24 at 9.50.49 AM.png | Table of backgrounds]]
 +
##* Rory: Comments on table- we need to be careful to show total cross sections without context. Elton: Possibly add a column with the cross section selected on Mpipi mass and low momentum transfer in the region relevant to Primakoff.
 +
##* Ilya: Should include K0->pi0pi0 into the table.
 +
##* Include references to relevant data
 +
##* Add values used in the proposal
 +
## Experiment optimization
 +
##* Target position (Beni).. not yet
 +
##* Beam energy:
 +
##* Generate angular distributions for some other targets to compare to Pb
 +
## 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
 +
## Analysis of PRIMEX data
 +
# Other business
 +
# Next meeting

Latest revision as of 11:43, 24 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 to request paragraph (Rory)

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Feedback from collaboration review
  4. Theory update
  5. Experiment update
  6. Updates to collaboration draft
    1. Backgrounds to be simulated
    2. Table of cross sections (Rory and Ilya)
      • Include references to relevant data
      • Add values used in the proposal
    3. Experiment optimization
      • Target position (Beni).. not yet
      • Beam energy:
      • Generate angular distributions for some other targets to compare to Pb
    4. 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
    5. Analysis of PRIMEX data
  7. Other business
  8. Next meeting

Minutes

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

  1. Announcements
  2. Action Items
  3. Feedback from collaboration review
  4. Theory update
  5. Experiment update
  6. Updates to collaboration draft
    1. Backgrounds to be simulated
    2. Table of backgrounds
      • Rory: Comments on table- we need to be careful to show total cross sections without context. Elton: Possibly add a column with the cross section selected on Mpipi mass and low momentum transfer in the region relevant to Primakoff.
      • Ilya: Should include K0->pi0pi0 into the table.
      • Include references to relevant data
      • Add values used in the proposal
    3. Experiment optimization
      • Target position (Beni).. not yet
      • Beam energy:
      • Generate angular distributions for some other targets to compare to Pb
    4. 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
    5. Analysis of PRIMEX data
  7. Other business
  8. Next meeting
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