Difference between revisions of "Pi0 Polarizability Meeting Feb 28, 2020"
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# Action Items | # Action Items | ||
# Theory update | # Theory update | ||
+ | #* Updates to proposal | ||
+ | #* Jose modified the text and Mark included it into the draft early this week. It includes some clarifications and new references | ||
+ | #* Details of Jose's calculation will be added into an Appendix. | ||
# Experiment update | # Experiment update | ||
+ | #* (Ilya) | ||
+ | #* Computed the Coulomb FF by modifying the parallel momentum for the increased mass and the cross section scaled for two pions (x2) | ||
+ | #* Rory: How does this differ from the standard electron scattering FF? It is a Glauber calculation that includes absorption corrections for the pion. | ||
+ | #* The calculation shows enhanced secondary maximum relative to single pi0. The higher momentum transfer requires increased precision in the calculation, which has required more computer time. | ||
+ | #* Ilya is now working on obtaining the photon flux for the Primex-eta experiment, so that the data can be properly normalized. | ||
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4364 Update] (Elton) | #* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=4364 Update] (Elton) | ||
# Work list for the draft proposal to collaboration | # Work list for the draft proposal to collaboration |
Revision as of 15:23, 28 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 -->):
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Action Items
- ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
Tentative Agenda
- Announcements
- Action Items
- Theory update
- Experiment update
- Update (Elton)
- Work list for the draft proposal to collaboration
- Clarification to questions from the PAC where possible
- Update to theory section (Jose and Mark)
- Sensitivity of cross section to polarizabilities
- Jose: The sensitivity is determined by extrapolating into the kinematic region for polarizabilities and will take effort. For now, we will use the estimates from Dai/Pennington.
- Initial optimization of experiment (e.g. target position)
- This item will not be attempted for the proposal draft.
- Analysis of PRIMEX data (Ilya)
- Assessment of nuclear coherent background (Elton)
- What is the t-dependence of the sigma (500)?
- Other business
- Next meeting
Minutes
Attending: Elton, Beni, Ilya, Alexander, Jose, Mark, Rory
- Announcements
- Action Items
- Theory update
- Updates to proposal
- Jose modified the text and Mark included it into the draft early this week. It includes some clarifications and new references
- Details of Jose's calculation will be added into an Appendix.
- Experiment update
- (Ilya)
- Computed the Coulomb FF by modifying the parallel momentum for the increased mass and the cross section scaled for two pions (x2)
- Rory: How does this differ from the standard electron scattering FF? It is a Glauber calculation that includes absorption corrections for the pion.
- The calculation shows enhanced secondary maximum relative to single pi0. The higher momentum transfer requires increased precision in the calculation, which has required more computer time.
- Ilya is now working on obtaining the photon flux for the Primex-eta experiment, so that the data can be properly normalized.
- Update (Elton)
- Work list for the draft proposal to collaboration
- Clarification to questions from the PAC where possible
- Update to theory section (Jose and Mark)
- Sensitivity of cross section to polarizabilities
- Jose: The sensitivity is determined by extrapolating into the kinematic region for polarizabilities and will take effort. For now, we will use the estimates from Dai/Pennington.
- Initial optimization of experiment (e.g. target position)
- This item will not be attempted for the proposal draft.
- Analysis of PRIMEX data (Ilya)
- Assessment of nuclear coherent background (Elton)
- What is the t-dependence of the sigma (500)?
- Other business
- Next meeting