February 13th, 2026

Today: KaonLT will be discussed first

Present
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Regina - Garth Huber, Nermin Sadoun, Vijay Kumar
CUA - Tanja Horn, Chi Kin Tam
York - Stephen Kay
Virginia - Richard Trotta
Glasglow - Kathleen Ramage
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Richard+Chi Kin
- Verbal updates
	- Code and procedure checks were the primary focus
	- Richard is stripping his code to try and find why him and Kin find different results
		- As discussed last week, Kin and reproduce Richard's but not visa versa
	- Kin is trying to use different fitting algorithms in order to find a better parameters that prevent sigL->0 values (specifically in the range t>0.4). 
		- In the Q2=3.0, W=2.32 setting, the minimum bound on t is ~0.4 so the entire set of data is at this sigL->0  regime
Vijay
- Two iterations of model variation (+/- 10%) for first Q2 setting
	- There was only a difference of +/- 0.1% for sigL/sigT
	- The lowest t-bin for sigL saw a difference of -0.4%
	- Vijay wasn't sure which t-bin uncertainty should be used to quantify, Garth clarified it should be point to point
- CT variations (2 iterations)
	- Huge change +/- 10-20%
	- This is expected, Richard noted the Jan 30th meeting where Dave commented that this seemed like an odd study to do.
		- Garth tends to agree
	- Garth pointed out that the randoms window needs to be rescaled for each variation since the prompt window changes
- Goal for next meeting is to finalize this setting's systematics
Nermin
- Pi- Q2=1.6, W=3.08
	- Detector efficiency
		- No RF cuts (removed because of last weeks discussions)
		- HMS cher: ~95-98%
		- HMS cal: ~97-98%
		- SHMS cal: 
			- Very odd values (~50%), but Garth commented it should be ~100% for an efficiency. 
			- It is likely the cut was not a 'less than cut', what she calculated is not an efficiency (rather showing ~50% of events are not pi-)
			- Garth: Use something like the NGC for a correct study
				- Although NGC has the issues discussed last week
				- An offline discussion concluded it's likely not properly calibrated
		- Question about the different efficiencies (i.e., All, COIN, singles)
			- It was suggested checking out Ali's thesis as he has a nice section in there
			- The main goal is looking run by run to find outliers
	- Goal for next week is to look into the SHMS calorimeter a bit more and the NGC calibration
Kathleen
- Verbal update
	- Setting up replays on the farm, but running into issues with permissions
		- Quick fix: Email Sanghwa (sanghwa@jlab.org) or Hanjie (hanjie@jlab.org) about adding Kathleen to HallC group
	- Goal look at the same settings as Nermin, but for 2022 (different epsilon)