20240930 CEPC physics performance for Ref-TDR
- Fangyi Guo, Gang Li, Kaili，Xiaotian，Peng Zhang， Reda， Shanzhen， Zebing， Chenguang， Boping， Xuai，Yanping， Ye Chen， Manqi， Zhijun， Hao Zhu， Yang Zhang， Jiarong Li, Mingshui Chen
- Online: Da Xu, Hengne Li, Hongbo Liao, Jin Wang, Junquan Tao, Ligang Xia, Leyan Li, Shiyi Liang, Lianyou Shan, Yingqi Hou, Yuchen Cai, Yunyun Fan
- general information：
- IDRC review during 21-22 Oct., rehearsal on Oct. 8.
- Funding proposal for Henan completed.
- Fangyi : brief introduction of CyberPFO
- only track, cluster, no removement of ambiguity
- currently no id for ECAL or HCAL cluster, need to use distance (w.r.t. IP) to check if it’s a ECal or HCal cluster
- No link to track yet
- No PID
- No endcap yet. Even the digitization of Barrel HCal not validated
- Should check performance of single particles (w.r.t. MC particles inside jets, eff, resolution, fake rates)
- need CEPCSW release more often from software group
- Chenguang: status on pid and tracking performance
- preliminary studies with small sample shown
- might ask software group or sub-detector group to provide package or example of the performance plots (validation plots, etc)
- e.g. tracking plots from Chengdong Fu, PID plots from Guang Zhao
- should check geometry (hit map, to be provided by Software group)
- Zebing: status on Jet performance
- With help from Gang, Chenguang implemented the ee-kt jet reco (from FASTJET external package)
- Reco & Gen jets studied, efficiency seems OK, resolution not.
- deltaR(reco, gen) seems too large
- Missing HCAL clusters (no energy stored) in PFO, will be fixed in new release
- Kaili
- found a bug in PFO, sign of track pxpypz reversed
- could also affect the jet resolution (direction)
- dimuon resolution 0.7%, should be ~0.1%. Need to check - what’s PFO linked track (tpc track? or full track?)
- Thanks to efforts by software group, now CPU time for simulation/reconstruction -> 2minutes/event, though still need more improvement
- Yanping: Simulation/reconstruction in the detector part where has response (like ATLAS)?
- Boping: could copy&paste the barrel digitization modules to the endcap?
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