Difference between revisions of "Pi0 Polarizability Meeting Feb 7, 2020"
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# 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) | ||
+ | #** Elton: The content of these slides comes from Mark's presentation at the collaboration meeting a year ago. We need to update it with more recent information. Draft slides will be made available before the collaboration meeting. | ||
#** Jose: Comment on previous data: Relative errors of the cross section even near 1 GeV is not very good and should be improved. | #** 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. | #** Jose: Having better data below 1 GeV will be a very good motivator for theorists to improve calculations. |
Revision as of 16:32, 7 February 2020
Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
CC F228
Connecting
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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)
- Elton: The content of these slides comes from Mark's presentation at the collaboration meeting a year ago. We need to update it with more recent information. Draft slides will be made available before the collaboration meeting.
- 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