Difference between revisions of "Pi0 Polarizability Meeting Apr 3, 2020"
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= Minutes = | = Minutes = | ||
− | ''Attending: | + | ''Attending: Elton, Mark, Beni, Jose, Alex, Svetlana, Ilya, Rory |
# Announcements | # Announcements | ||
# Action Items | # Action Items | ||
## [[ email from Vanderhaeghen | email from Marc Vanderhaeghen]] | ## [[ email from Vanderhaeghen | email from Marc Vanderhaeghen]] | ||
+ | ## Rory will ask Marc to provide a paragraph for the proposal. | ||
# Theory update | # Theory update | ||
## [[Media:Non-flip amplitude.png | Non-flip amplitude]] (Jose's notepad) | ## [[Media:Non-flip amplitude.png | Non-flip amplitude]] (Jose's notepad) | ||
# 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 | ||
Line 89: | Line 92: | ||
# Other business | # Other business | ||
# Next meeting | # Next meeting | ||
+ | #* Next Friday, April 10, 10 am. |
Latest revision as of 11:30, 3 April 2020
Contents
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 -->):
- Make sure you have created a BlueJeans account via your JLab CUE account using this link:
- http://jlab.bluejeans.com (You should only need to do this once)
- Meeting ID: 949 429 419
- (you may need to type this in, depending how you connect)
- If connecting via Web Browser: click this link (no passcode is needed):
- 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
- If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
- Dial: (408) 740-7256 (US or Canada only)
- or, List of International Numbers
- If connecting via Polycom unit:
- Dial 199.48.152.152 or bjn.vc
- Enter meeting ID above
Action Items
- ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
- Follow-up contact with Marc (Rory)
Tentative Agenda
- Announcements
- Action Items
- Theory update
- Experiment update
- Flat files for Amptools (Elton)
- Updates to collaboration draft
- Backgrounds to be simulated
- Background hits
- BGGEN (PYTHIA)
- eta production
- Experiment optimization
- Target position (Beni)
- 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
- Backgrounds to be simulated
- Other business
- Next meeting
Minutes
Attending: Elton, Mark, Beni, Jose, Alex, Svetlana, Ilya, Rory
- Announcements
- Action Items
- email from Marc Vanderhaeghen
- Rory will ask Marc to provide a paragraph for the proposal.
- Theory update
- Non-flip amplitude (Jose's notepad)
- Experiment update
- 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.
- Flat files for Amptools (Elton)
- Updates to collaboration draft
- Backgrounds to be simulated
- Background hits
- BGGEN (PYTHIA)
- eta production
- Experiment optimization
- Target position (Beni)
- 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
- Backgrounds to be simulated
- Other business
- Next meeting
- Next Friday, April 10, 10 am.