Kun's weekly group discussion

Friday 24 Oct 2025, 09:30 → 10:50 Asia/Shanghai

Lab Room #S244 (Tsung-Dao Lee Institute)

Kun Liu (TDLI / SJTU)

会议链接/Zoom Link: 
https://cern.zoom.us/j/66708976616?pwd=wIvRGTja7ooamUftTYtz7brdc6ynl9.1

会议号/Meeting ID: 667 0897 6616

会议密码/Passcode: 949845

09:30 → 10:00 Tracker Team: Hardware, Reconstruction, Simulation and Analysis

09:30 Tracker R&D

Hardware: DS Tracker Module based on Baby_2 and AC-LGAD sensors

Speakers: Dian YU (Tsung-Dao Lee Institute), Kang Liu, Lin Yang (TDLI), xiang li (tdli)

09:40 Track Reconstruction

Dark SHINE and CEPC

Speakers: Dian YU (Tsung-Dao Lee Institute), Kang Liu, Lin Yang (TDLI)

09:50 Simulation and Analysis

Dark SHINE, CEPC and ITk Test Beam

Speakers: Dian YU (Tsung-Dao Lee Institute), Yufeng Wang (TDLI)

Lin's CLHCP Report

outline

1. intro to ATLAS ITk strip detector
2. intro to test beam facilities
3. intro to data analysis tools
4. SS-406 and SS-381 results

10:00 → 10:40 ATLAS: Analysis, Performance and Physics

10:00 Egamma performance

Run2, Run3

Speaker: Lin Yang (TDLI)

10:10 Higgs analysis

Speakers: Dian YU (Tsung-Dao Lee Institute), Kang Liu, Lin Yang (TDLI), xiang li (tdli)

10.24.pdf

Dian:

1. GN3 efficiency study reported on ATLAS Run 3 HH → bbγγ and H → γγ couplings analysis group. Many comments received. (TODO: train BDT with samples passed AT_LEAST_TWO_B_JETS selection)
2. Ran lacking samples, mainly on BSM (kappa lambda 0, 2.5, 5, 10, kappa 2v 0, 1, 1.5, 2, 2.5, 3)
3. Wrote scripts for producing ntuples with featured branches for BDT training

TODO:

1. Evaluate the influence of ttyy_allhad sample (to fix PanDA or use reweighting based on mc23d&e)
2. train BDT model
3. categorization using the model
4. calculate Asimov significance based on the categorization

10:40 → 10:50 General issues

Feel free to continue the discussion and share your opinions with the group.

Speakers: Dian YU (Tsung-Dao Lee Institute), Jialin Li, Kang Liu, Lin Yang (TDLI), xiang li (tdli)