4 tops weekly meeting

Wednesday 3 Nov 2021, 16:00 → 18:00 Asia/Shanghai

1 Status of Fudan

Speaker: ZHANG Yu

2 Status of IHEP

Speakers: Fabio Iemmi (IHEP) , 华慧玲

TO BE DONE
-) Fabio: check with Huiling to see if we can have a datacard for next week
-) Make a list of things to be implemented in next round of BSM (gen-matching for DeepTau SF, gen-matching for Top tagging SF)
-) Make sure about how we treat top tagger. Do we clean jet collection from taus before reconstructing resolved tops with HOT tagger?
-) Understand how to treat tt+bb. Consider what Jan wrote in his email. It seems more convenient (and better) to use dedicated tt+bb simulated sample (additional b quarks from matrix element instead of from parton shower). Then, there are 2 possible ways to merge together tt+bb and inclusive tt samples. What are other 4tops teams doing? We should ask them and try to be consistent
-) One of the two ways of merging tt+bb and tt relies on the so called ttbarID. Check if we are able to perform ttbarID

TO BE DONE BEFORE PRESENTATION AT TTX MEETING
-) Produce datacard with expected significance (PRIORITY!)
-) Add some systematics if possible (some of them should be easy to add, e.g., QCD shape and yield uncertainties, b tagging uncertainties)