Difference between revisions of "Pi0 Polarizability Meeting Feb 7, 2020"
From GlueXWiki
(→Minutes) |
|||
Line 73: | Line 73: | ||
* ''' Grenfell: ''' Svetlana Barkanova | * ''' Grenfell: ''' Svetlana Barkanova | ||
* ''' JLab: ''' Alexander Austregesilo, Jose Goity, Mark Ito, Beni Zihlmann, Elton Smith | * ''' JLab: ''' Alexander Austregesilo, Jose Goity, Mark Ito, Beni Zihlmann, Elton Smith | ||
− | |||
− | |||
# Announcements | # Announcements | ||
Line 83: | Line 81: | ||
# Theory update | # Theory update | ||
#* [[Media:NOTES-JOSE Feb7 2020.pdf | Jose's Notes]] | #* [[Media:NOTES-JOSE Feb7 2020.pdf | Jose's Notes]] | ||
+ | #* Jose has found an analytic parameterization for Amplitude A. It describes the curve fairly well, but has many parameters that are fine tuned. | ||
+ | #* Mark: It might be easier to provide a spline description of the data, or even a table of numbers. | ||
# Experiment update | # Experiment update | ||
# Presentation to Collaboration (Feb 14) | # Presentation to Collaboration (Feb 14) | ||
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4323 Rough DRAFT of Presentation to Collaboration Meeting] (Elton) | #* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4323 Rough DRAFT of Presentation to Collaboration Meeting] (Elton) | ||
+ | #** Jose: Comment on previous data: Relative errors of the cross section even near 1 GeV is not very good and should be improved. | ||
+ | #** Jose: Having better data below 1 GeV will be a very good motivator for theorists to improve calculations. | ||
# Work list for the draft proposal to collaboration | # Work list for the draft proposal to collaboration | ||
#* Clarification to questions from the PAC where possible | #* Clarification to questions from the PAC where possible | ||
#* Update to theory section | #* Update to theory section | ||
+ | #** Jose will work on updating the theory section | ||
#* Sensitivity of cross section to polarizabilities | #* Sensitivity of cross section to polarizabilities | ||
+ | #** Quantifying the sensitivity of the cross sections to the polarizabilities is a driving factor for the experiment and it would be good to get a value this month for the draft proposal. | ||
#* Initial optimization of experiment | #* Initial optimization of experiment | ||
#** target position | #** target position | ||
+ | #** take the CDC out? | ||
#* Analysis of PRIMEX data | #* Analysis of PRIMEX data | ||
#* Assessment of nuclear coherent background | #* Assessment of nuclear coherent background |
Revision as of 16:30, 7 February 2020
Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
CC F228
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
- Collaboration Meeting
- PAC48 Call For Proposals. Submission deadline is Monday, June 1, 2020. PAC is the week of July 13, 2020.
- GlueX Bylaws. GlueX collaboration requires a draft 90 days in advance of collaboration vote (end of Feb). Need not be final version.
- Action Items
- Theory update
- Experiment update
- Presentation to Collaboration (Feb 14)
- Work list for the draft proposal to collaboration
- Clarification to questions from the PAC where possible
- Update to theory section
- Sensitivity of cross section to polarizabilities
- Initial optimization of experiment
- target position
- Analysis of PRIMEX data
- Assessment of nuclear coherent background
- What is the t-dependence of the sigma (500)?
- NPP Mailing list? (Mark)
- Other business
- Next meeting
Minutes
Present:
- Grenfell: Svetlana Barkanova
- JLab: Alexander Austregesilo, Jose Goity, Mark Ito, Beni Zihlmann, Elton Smith
- Announcements
- Collaboration Meeting
- PAC48 Call For Proposals. Submission deadline is Monday, June 1, 2020. PAC is the week of July 13, 2020.
- GlueX Bylaws. GlueX collaboration requires a draft 90 days in advance of collaboration vote (end of Feb). Need not be final version.
- Action Items
- Theory update
- Jose's Notes
- Jose has found an analytic parameterization for Amplitude A. It describes the curve fairly well, but has many parameters that are fine tuned.
- Mark: It might be easier to provide a spline description of the data, or even a table of numbers.
- Experiment update
- Presentation to Collaboration (Feb 14)
- Rough DRAFT of Presentation to Collaboration Meeting (Elton)
- Jose: Comment on previous data: Relative errors of the cross section even near 1 GeV is not very good and should be improved.
- Jose: Having better data below 1 GeV will be a very good motivator for theorists to improve calculations.
- Rough DRAFT of Presentation to Collaboration Meeting (Elton)
- Work list for the draft proposal to collaboration
- Clarification to questions from the PAC where possible
- Update to theory section
- Jose will work on updating the theory section
- Sensitivity of cross section to polarizabilities
- Quantifying the sensitivity of the cross sections to the polarizabilities is a driving factor for the experiment and it would be good to get a value this month for the draft proposal.
- Initial optimization of experiment
- target position
- take the CDC out?
- Analysis of PRIMEX data
- Assessment of nuclear coherent background
- What is the t-dependence of the sigma (500)?
- NPP Mailing list? (Mark)
- Other business
- Next meeting