Difference between revisions of "Pi0 Polarizability Meeting Aug 30, 2019"

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## Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
 
## Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
 
# PAC 47
 
# PAC 47
−
## [[Media:LOI12-19-003 TAC THY.pdf | TAC Physics Comments]]
+
# [[Media:LOI12-19-003 TAC THY.pdf | TAC Physics Comments]]
−
##* One-pion exchange contribution (C-parity conservation?)
+
## One-pion exchange contribution (C-parity conservation?)
−
##* Eliminating contributions from iso-scalar resonances (experiment)
+
## Eliminating contributions from iso-scalar resonances (experiment)
−
##* Sensitivity of cross sections to polarizability (theory)
+
## Sensitivity of cross sections to polarizability (theory)
−
##* Corrections due to photon virtuality (theory)
+
## Corrections due to photon virtuality (theory)
−
## [[Media:EltonMark emailto SteveDytman.png | email from Elton and Mark to PAC Reviewer Steve Dytman]]. Homework to prepare for a proposal (Questions not answered by the LOI):
+
# [[Media:EltonMark emailto SteveDytman.png | email from Elton and Mark to PAC Reviewer Steve Dytman]]. Homework to prepare for a proposal (Questions not answered by the LOI):
−
##* So far we have only qualitatively investigated backgrounds, but do not find any particular reactions that have not been considered for pi0 and pi+pi- Primakoff reactions. Detailed studies needed.
+
## So far we have only qualitatively investigated backgrounds, but do not find any particular reactions that have not been considered for pi0 and pi+pi- Primakoff reactions. Detailed studies needed.
−
##* Determine how backgrounds will affect the determination of the pi0pi0 Primakoff cross section.
+
## Determine how backgrounds will affect the determination of the pi0pi0 Primakoff cross section.
−
##* Evaluate sensitivity to run time. Need to justify requested beam time.
+
## Evaluate sensitivity to run time. Need to justify requested beam time.
−
##* Develop the case for measuring pi0pi0 production at threshold aside from the determination of the polarizability.
+
## Develop the case for measuring pi0pi0 production at threshold aside from the determination of the polarizability.
−
## [https://www.jlab.org/exp_prog/PACpage PAC47 Report]
+
# [https://www.jlab.org/exp_prog/PACpage PAC47 Report]
 
# Other business
 
# Other business
 
# Next meeting
 
# Next meeting

Revision as of 11:54, 30 August 2019

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 -->):

  1. Make sure you have created a BlueJeans account via your JLab CUE account using this link:

  2. Meeting ID: 949 429 419
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  3. If connecting via Web Browser: click this link (no passcode is needed):

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    • 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 "##"

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    • Dial 199.48.152.152 or bjn.vc
    • Enter meeting ID above



Action Items

  1. Contact Dai regarding the pi0pi0 proposal (Elton).

Tentative Agenda

  1. Announcements
    • Wiki pages moved to open repository
  2. Action Items
    1. Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
  3. PAC 47
    1. TAC Physics Comments
      • One-pion exchange contribution (C-parity conservation?)
      • Eliminating contributions from iso-scalar resonances (experiment)
      • Sensitivity of cross sections to polarizability (theory)
      • Corrections due to photon virtuality (theory)
    2. email from Elton and Mark to PAC Reviewer Steve Dytman. Homework to prepare for a proposal (Questions not answered by the LOI):
      • So far we have only qualitatively investigated backgrounds, but do not find any particular reactions that have not been considered for pi0 and pi+pi- Primakoff reactions. Detailed studies needed.
      • Determine how backgrounds will affect the determination of the pi0pi0 Primakoff cross section.
      • Evaluate sensitivity to run time. Need to justify requested beam time.
      • Develop the case for measuring pi0pi0 production at threshold aside from the determination of the polarizability.
    3. PAC47 Report
  4. Other business
  5. Next meeting

Minutes

Attending: David, Elton, Jose, Ilya, Beni, Mark (JLab); Rory (UConn); Svetlana, Aleks (MU)

  1. Announcements
    • Wiki pages moved to open repository
  2. Action Items
    1. Lingyun Dai, Hunan University: Changsha, Hunan, CN (dailingyun@hnu.edu.cn)
  3. PAC 47
  4. TAC Physics Comments
    1. One-pion exchange contribution (C-parity conservation?)
    2. Eliminating contributions from iso-scalar resonances (experiment)
    3. Sensitivity of cross sections to polarizability (theory)
    4. Corrections due to photon virtuality (theory)
  5. email from Elton and Mark to PAC Reviewer Steve Dytman. Homework to prepare for a proposal (Questions not answered by the LOI):
    1. So far we have only qualitatively investigated backgrounds, but do not find any particular reactions that have not been considered for pi0 and pi+pi- Primakoff reactions. Detailed studies needed.
    2. Determine how backgrounds will affect the determination of the pi0pi0 Primakoff cross section.
    3. Evaluate sensitivity to run time. Need to justify requested beam time.
    4. Develop the case for measuring pi0pi0 production at threshold aside from the determination of the polarizability.
  6. PAC47 Report
  7. Other business
  8. Next meeting
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