Difference between revisions of "Pi0 Polarizability Meeting may 7, 2020"
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# Experiment update | # Experiment update | ||
# Updates to collaboration draft | # Updates to collaboration draft | ||
− | ## | + | ## Backgrounds to be simulated |
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4450 Background hits] (Elton) | ##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4450 Background hits] (Elton) | ||
##* BGGEN (PYTHIA) | ##* BGGEN (PYTHIA) | ||
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4433 eta production] (Elton) | ##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4433 eta production] (Elton) | ||
##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4439 Incoherent production] (Elton) | ##* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4439 Incoherent production] (Elton) | ||
− | |||
## Table of cross sections (Rory and Ilya) | ## Table of cross sections (Rory and Ilya) | ||
##* [https://userweb.jlab.org/~ilarin/npp/estimate.pb Single pi0 estimates] (Ilya) | ##* [https://userweb.jlab.org/~ilarin/npp/estimate.pb Single pi0 estimates] (Ilya) |
Latest revision as of 14:37, 1 May 2020
Contents
Meeting Information
Meeting Time And Location
03:00 pm 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)
Tentative Agenda
- Announcements
- Action Items
- Feedback from collaboration review
- Theory update
- Experiment update
- Updates to collaboration draft
- Backgrounds to be simulated
- Background hits (Elton)
- BGGEN (PYTHIA)
- eta production (Elton)
- Incoherent production (Elton)
- Table of cross sections (Rory and Ilya)
- 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.
- Scaling factors for CPP and NPP (Rory)
- 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
- Backgrounds to be simulated
- Other business
- Next meeting
Minutes
Attending: