Aug 20 2024 PrimEx-eta (informal) Calibration & Analysis Meeting

Time and Place

• Time: Tuesday, August 20, 2024 at 10:00 am EDT.
• Room: Online

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Agenda

1. Announcements
2. List of good runs
   • Run Validation phase I -- https://halldweb.jlab.org/wiki/index.php/RunPeriod-2019-01_Validation
     • List of runs collected in 2019
   • Run Validation phase II -- https://halldweb.jlab.org/wiki/index.php/RunPeriod-2021-08_Validation
     • List of runs collected in 2021
     • FCAL LED efficiency and timing maps
   • Run Validation phase III -- https://halldweb.jlab.org/wiki/index.php/RunPeriod-2022-08_Validation
3. Analysis
4. Two analysis strategy:
   • What should be compared?
     • • N_{yield}(E_\gamma,\theta) or/and
       • d\sigma\d\Omega(E_\gamma,\theta) or/and
       • \Gamma(\eta \to \gamma\gamma)
   • What is common?
     • Same inputs:
       • Data (full & empty) & simulation (signal & background) files
       • Integrated luminosity and energy bin
       • Branching ratios
       • Cool gas contribution
   • How to treat differences?
   • Below 1\sigma
   • Between 1\sigma and 2\sigma
   • Above 2\sigma
5. Data/Simu:
   • What is the \eta polar angle resolution? -> data/simu comparison is good?
6. Calibration is done
7. Analysis Updates:
   • Viviana
   • Drew
   • ig
8. BGGEN check