Difference between revisions of "Pi0 Polarizability Meeting may 22, 2020"

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(Created page with "=Meeting Information = == Meeting Time And Location == 10:00 am ET (JLab time) REMOTE ==Connecting== <div class="toccolours mw-collapsible mw-collapsed"> You can connect us...")
 
 
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== Action Items ==
 
== Action Items ==
 
# ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
 
# ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
 +
# BGGEN simulations (Mark)
  
 
== Tentative Agenda ==
 
== Tentative Agenda ==
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# Theory update
 
# Theory update
 
# Experiment update
 
# Experiment update
−
# Updates to collaboration draft
+
# [https://halldweb.jlab.org/doc-public/DocDB/ShowDocument?docid=4478 Report to collaboration] (Elton)
−
## Backgrounds to be simulated
+
## [[Media:Justin email 5-13.png | email from Justin]]
−
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4450 Background hits] (Elton)
+
## [https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_nucl-2Dex_0504012&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=c-_tH8evYLC4MjBfbp0hiQ&m=JiwiGBN-mUFjDq4Kxf0p2ISmL3HQvNe8fDDo1tFNwAc&s=vJ2N98J-DzMAH-MmPBB0wnIh1pKMhwfiZsCSuGT08J4&e=  Two pion production Bonn/Mainz] (Susan Schadmand)
 +
# Collaboration draft
 +
## Backgrounds
 +
##* npp_analysis (Mark)
 
##* BGGEN (PYTHIA)
 
##* BGGEN (PYTHIA)
−
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4433 eta production] (Elton)
+
##* More realistic eta production?
−
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4439 Incoherent production] (Elton)
+
−
## Table of cross sections (Rory and Ilya)
+
−
##* [https://userweb.jlab.org/~ilarin/npp/estimate.pb Single pi0 estimates] (Ilya)
+
−
##* (From Ilya)  I got a rough estimation for the effect of second pi0 absorption on cross-sections: for Primakoff ~7.5% and for Nuclear Coherent ~45%.  That was done for 300MeV pi0pi0 mass. For the incoherent term, this estimation will require more calculations and most likely help of Sergey.
+
−
##*[[Media:Scaling_factors_for_CPP_and_NPP.pdf | Scaling factors for CPP and NPP]] (Rory)
+
−
##* Include references to relevant data
+
−
##* Add values used in the proposal
+
 
## Experiment optimization
 
## Experiment optimization
−
##* Target position (Beni).. not yet
 
−
##* Beam energy:
 
−
##* Generate angular distributions for some other targets to compare to Pb
 
 
## Significance of experiment
 
## 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
+
##* [https://halldweb.jlab.org/doc-public/DocDB/ShowDocument?docid=4373 Proposal Draft]
 
## Analysis of PRIMEX data  
 
## Analysis of PRIMEX data  
 
# Other business
 
# Other business
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= Minutes =
 
= Minutes =
−
''Attending:
+
''Attending: Rory, Ilya, Beni, Mark, Elton, Jose
 +
 
 +
== Tentative Agenda ==
 +
# Announcements
 +
# Action Items
 +
# Feedback from collaboration review
 +
#* We are still waiting on the response from the committee
 +
# Theory update
 +
# Experiment update
 +
# [https://halldweb.jlab.org/doc-public/DocDB/ShowDocument?docid=4478 Report to collaboration] (Elton)
 +
## [[Media:Justin email 5-13.png | email from Justin]]
 +
## [https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_nucl-2Dex_0504012&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=c-_tH8evYLC4MjBfbp0hiQ&m=JiwiGBN-mUFjDq4Kxf0p2ISmL3HQvNe8fDDo1tFNwAc&s=vJ2N98J-DzMAH-MmPBB0wnIh1pKMhwfiZsCSuGT08J4&e=  Two pion production Bonn/Mainz] (Susan Schadmand)
 +
## The Collaboration Board is proposing a by-law that will allow individuals outside the collaboration, e.g. theorists, to access the data after specific approval.
 +
# Collaboration draft
 +
## Backgrounds
 +
##* npp_analysis (Mark)
 +
##* BGGEN (PYTHIA). Mark has submitted test jobs and most of the pieces are in place. Expect to be able to start some production jobs next week.
 +
##* More realistic eta production?
 +
##** Much discussion regarding this topic. Elton will try to implement a more realistic t distribution for eta production.
 +
## Experiment optimization
 +
## Significance of experiment
 +
##* [https://halldweb.jlab.org/doc-public/DocDB/ShowDocument?docid=4373 Proposal Draft]
 +
##** We had a discussion of the systematic error on "Detector acceptance and efficiency" (item #4). Mark will evaluate the argument and report at the next meeting.
 +
## Analysis of PRIMEX data
 +
# Other business
 +
# Next meeting
 +
#* Friday May 29, 10 am.

Latest revision as of 11:39, 22 May 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. BGGEN simulations (Mark)

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Feedback from collaboration review
  4. Theory update
  5. Experiment update
  6. Report to collaboration (Elton)
    1. email from Justin
    2. Two pion production Bonn/Mainz (Susan Schadmand)
  7. Collaboration draft
    1. Backgrounds
      • npp_analysis (Mark)
      • BGGEN (PYTHIA)
      • More realistic eta production?
    2. Experiment optimization
    3. Significance of experiment
    4. Analysis of PRIMEX data
  8. Other business
  9. Next meeting

Minutes

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

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Feedback from collaboration review
    • We are still waiting on the response from the committee
  4. Theory update
  5. Experiment update
  6. Report to collaboration (Elton)
    1. email from Justin
    2. Two pion production Bonn/Mainz (Susan Schadmand)
    3. The Collaboration Board is proposing a by-law that will allow individuals outside the collaboration, e.g. theorists, to access the data after specific approval.
  7. Collaboration draft
    1. Backgrounds
      • npp_analysis (Mark)
      • BGGEN (PYTHIA). Mark has submitted test jobs and most of the pieces are in place. Expect to be able to start some production jobs next week.
      • More realistic eta production?
        • Much discussion regarding this topic. Elton will try to implement a more realistic t distribution for eta production.
    2. Experiment optimization
    3. Significance of experiment
      • Proposal Draft
        • We had a discussion of the systematic error on "Detector acceptance and efficiency" (item #4). Mark will evaluate the argument and report at the next meeting.
    4. Analysis of PRIMEX data
  8. Other business
  9. Next meeting
    • Friday May 29, 10 am.
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