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Kaon LT Meetings » CTleakage_mtg_23oct16.txt

Richard Trotta, 10/17/2023 03:48 PM

 
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2023 Oct 16 (Notes from CT Leakage Meeting)
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Attendance: Alicia P., Ali U., Garth H., Richard T.
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Cointime Leakage Issue
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- Ali was updated on the bifurcation seen in beta vs CT
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- The bifurcation needs to be cut out and corrected with a beta efficiency
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- A consistent beta cut needs to be applied for all runs (heep included)
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- Use 8.2 data as a reference to check what good data looks like
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- Nathan suggested it may be a rate dependent correction so such a beta efficiency may need to be applied setting by setting
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- It is a beta correction not CT (they are correlated), but a cut in beta will also apply to CT
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- CT is based off the SHMS reference time so HMS should be correlated to this
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- Ali can add the beta efficiency to the report file to check the possible rate dependence
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	- In CT vs beta: Three boxes...
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	- Around central peak
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	- Lower bifurcation
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	- Upper streak
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- This will require a MM cut for each particle type, a CT cut, and possibly randoms
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- CT vs MM plot binned in cuts of beta may help to pick a good "box" for each scenario
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- Maybe combine upper+lower and apply cut in CT vs MM. Then compare ratio of this upper+lower and central peak to all data, respectively.
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- Make sure PID also included
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Next Steps
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- Everything will need to be replayed after this
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	- This will include new offset values
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	- Out of plane offsets is not fully resolved yet
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		- Possibly find from Pmy?
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- Ali will work on report file and Richard will finish up offsets. Then a new replay of all data will be done.
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