Meeting time: Tuesday
California: 7:30 AM Germany: 4:30 PM China: 10:30 PM
Zoom link: https://gsi-fair.zoom.us/j/92845620778 Passcode: 965311 

Link to previous meetings: link

17/6/2025
Mathias: slides
Liubing: 
Ziyue: slides

Action items:
- Calculate the 0–5% 3.2 GeV spectra; send the corresponding pT binning to Mathias (Liubing/Ziyue)
- Use the received pT binning to obtain the spectra for 0–5% at 3.2 GeV. All: Share your results with one another and perform comparisons (Mathias)

23/6/2025
Mathias: slides
Liubing: slides
Ziyue: slides

Action items:
- Compare and prepare a few slides on signal extraction for charged kaons to investigate the differences between data at high pT (functions for describing background) and the statistical error (Mathias/Ziyue)
- Add E866 data the kaon plot for comparison (Ziyue)
- For 3.2 GeV, use 1.139 as beam rapidity
- Use an alternate rapidity binning (-1.05, -0.95, -0.85, ...) for comparison purposes (Mathias/Ziyue) 
(can have two different rapidity binning, one for internal comparison, one for publication)
- quantify the effect of nhits cut on the lowest pT bin for data and MC, slide 3-9 add a linear scaled version (Liubing)

30/6/2025
Mathias:
Liubing: slides
Ziyue: slides

- Compare TOF matching efficiency, TPC tracking efficiency and signal counts separately (all)
- Use exponential-functional forms to fit the pion data, find out which data can be described by such functions
and which one has a kink like structure around pT=0.5 GeV, and fix the underlying issue (Mathias, Liubing)
- For lowest pT pion, Mathias spectra looks unnatural, and is inconsistent with Liubing, need more investigation (Mathias)
- For target rapidity, major difference is observed, needs investigation (Mathias, Liubing)
- Compare with AGS measurements (all)
- Use the integral of the fit function (Ziyue)
- Check the effect of different background functions for kaons (Ziyue, Mathias)

8/7/2025
Mathias: slides
Ziyue: slides

- Use the same event/track level cuts (All)
- Vr(-0.3,-2.0)<2cm
- nhitsfit > 20
- nhitsratio > 0.51
(I would suggest Liubing to do the same for the next iteration with pions/protons)

- Prepare a small run list for comparison and send to Ziyue (Mathias)

- Share fitting parameters with Mathias (Ziyue)

- Compare signal counts and TOF matching efficeincy (can start with -0.25<y<-0.15) (Mathias/Ziyue)

Resources:
Coulomb potential paper from AGS paper