Difference between revisions of "Pi0 Polarizability Meeting Sep 27, 2019"
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# Action Items | # Action Items | ||
# Look at (PRIMEX) Be target data (Ilya) | # Look at (PRIMEX) Be target data (Ilya) | ||
+ | ## First look at Be data [https://userweb.jlab.org/~ilarin/npp/2pi0_in_primexd_be.pdf pdf] | ||
+ | ## FCAL only acceptance for 0.5GeV single gamma energy cut and different production angles and 2pi0 inv. mass values [https://userweb.jlab.org/~ilarin/npp/2pi0eff_fcal_only_0.5.GeV.jpeg acceptance plots. Beam energy: Blue - 4GeV, Black - 6GeV, Red - 8GeV, Green - 10GeV] | ||
+ | ## 2pi0 production on Be yield comparison: 0.5GeV single gamma energy cut, extra events from reducting FCAL energy cut to 0.3GeV [https://userweb.jlab.org/~ilarin/npp/2pi0elas.0.3.vs.0.5.jpeg plot] | ||
# Experimental Issues for Proposal | # Experimental Issues for Proposal | ||
## Event generator: Do we need to upgrade our model? | ## Event generator: Do we need to upgrade our model? | ||
Line 65: | Line 68: | ||
=Minutes= | =Minutes= | ||
− | ''Attending: | + | ''Attending: David, Elton, Ilya, Beni, Jose, Alex, Mark, Aleks, Svetlana. |
+ | |||
+ | # Announcements | ||
+ | # Action Items | ||
+ | # Look at (PRIMEX) Be target data (Ilya) | ||
+ | ## First look at Be data [https://userweb.jlab.org/~ilarin/npp/2pi0_in_primexd_be.pdf pdf] | ||
+ | ##* 2 days of Be data, trigger threshold ~ 4 GeV | ||
+ | ## FCAL only acceptance for 0.5GeV single gamma energy cut and different production angles and 2pi0 inv. mass values [https://userweb.jlab.org/~ilarin/npp/2pi0eff_fcal_only_0.5.GeV.jpeg acceptance plots. Beam energy: Blue - 4GeV, Black - 6GeV, Red - 8GeV, Green - 10GeV] | ||
+ | ##* All photons are required to hit the Fcal. | ||
+ | ##* Acceptance seems to be a strong function of energy at least for 4 photons in the Fcal. | ||
+ | ## 2pi0 production on Be yield comparison: 0.5GeV single gamma energy cut, extra events from reducting FCAL energy cut to 0.3GeV [https://userweb.jlab.org/~ilarin/npp/2pi0elas.0.3.vs.0.5.jpeg plot] | ||
+ | # Experimental Issues for Proposal | ||
+ | ## Event generator: Do we need to upgrade our model? | ||
+ | ##* Jose will take a look at this | ||
+ | ## Systematic assessment of backgrounds: f0(500), gA->Aeta, eta->pi0pi0(pi0), incoherent gp->pi0pi0 p | ||
+ | ## Additional analysis of hydrogen data (Beni)? | ||
+ | ##* Beni will continue his studies with 2018 data. | ||
+ | ## [[Media:CPP configuration.png | Experimental Configuration for CPP]] | ||
+ | ## Optimization of running time: time, target(s), beam energy, compatibility with CPP | ||
+ | ##* Beni: We need to check that at low-current bleed-through is not an issue. | ||
+ | # Other business | ||
+ | # Next meeting | ||
+ | #* Next meeting is at 10 am on Oct 11. We will get an update on the theory issues. |
Latest revision as of 13:16, 27 September 2019
Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
CC F228
Connecting
Dummy for now: 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
- Experimental priority list and how to address them
- Contact theorists:
- Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
- Serguei Gevorkyan
- Barbara Pasquini
- Provide a t distribution for pi0 Primakoff (Elton)
Tentative Agenda
- Announcements
- Action Items
- Look at (PRIMEX) Be target data (Ilya)
- First look at Be data pdf
- FCAL only acceptance for 0.5GeV single gamma energy cut and different production angles and 2pi0 inv. mass values acceptance plots. Beam energy: Blue - 4GeV, Black - 6GeV, Red - 8GeV, Green - 10GeV
- 2pi0 production on Be yield comparison: 0.5GeV single gamma energy cut, extra events from reducting FCAL energy cut to 0.3GeV plot
- Experimental Issues for Proposal
- Event generator: Do we need to upgrade our model?
- Systematic assessment of backgrounds: f0(500), gA->Aeta, eta->pi0pi0(pi0), incoherent gp->pi0pi0 p
- Additional analysis of hydrogen data (Beni)?
- Experimental Configuration for CPP
- Optimization of running time: time, target(s), beam energy, compatibility with CPP
- Other business
- Next meeting
Minutes
Attending: David, Elton, Ilya, Beni, Jose, Alex, Mark, Aleks, Svetlana.
- Announcements
- Action Items
- Look at (PRIMEX) Be target data (Ilya)
- First look at Be data pdf
- 2 days of Be data, trigger threshold ~ 4 GeV
- FCAL only acceptance for 0.5GeV single gamma energy cut and different production angles and 2pi0 inv. mass values acceptance plots. Beam energy: Blue - 4GeV, Black - 6GeV, Red - 8GeV, Green - 10GeV
- All photons are required to hit the Fcal.
- Acceptance seems to be a strong function of energy at least for 4 photons in the Fcal.
- 2pi0 production on Be yield comparison: 0.5GeV single gamma energy cut, extra events from reducting FCAL energy cut to 0.3GeV plot
- First look at Be data pdf
- Experimental Issues for Proposal
- Event generator: Do we need to upgrade our model?
- Jose will take a look at this
- Systematic assessment of backgrounds: f0(500), gA->Aeta, eta->pi0pi0(pi0), incoherent gp->pi0pi0 p
- Additional analysis of hydrogen data (Beni)?
- Beni will continue his studies with 2018 data.
- Experimental Configuration for CPP
- Optimization of running time: time, target(s), beam energy, compatibility with CPP
- Beni: We need to check that at low-current bleed-through is not an issue.
- Event generator: Do we need to upgrade our model?
- Other business
- Next meeting
- Next meeting is at 10 am on Oct 11. We will get an update on the theory issues.