Kun's weekly discussion with students

Wednesday 8 Mar 2023, 16:00 → 17:50 Asia/Shanghai

N642 (TDLI)

Tencent meeting room: https://meeting.tencent.com/dm/NXVVKc7PPZSs

Meeting number: 695-8098-7502

16:00 → 16:05 Introduction

General items.

Speaker: Prof. Kun LIU (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)

16:05 → 16:15 ATLAS ttWML and ttHML analyses status

Speaker: Nihal BRAHIMI (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)

ttWML analysis status:

• The paper draft 1.0 entered first ATLAS circulation last week. No major comments so far! Deadline for comments is March 14th.
• Paper presentation took place yesterday at the ATLAS weekly
• PAM is being scheduled. Most likely Thursday or Friday next week.

ttHML analysis status:

• Jialin checked the MC modeling of all the input training variables to rule out any with poor modeling but MC QMisID was used. Updates at analysis meeting planned today.
• DD QMisID samples became available few days ago and the checks need to be rerun to account for these updates. Particular care needs to be given to the modelling of MVA scores to make sure the current systematic model is complete.
• The option to adopt a looser b-tagging WP for the events selection is considered as it was shown to result in enhanced MVAs performance. Comparisons w.r.t previous samples (v07) however showed a degraded performance. It is now suspected to be coming from a different network architecture (activation function). Retraining is needed to see if observed performance can be maintained.

16:15 → 16:25 ATLAS ttH analysis

Speaker: jialin li

1. Checking the impact of SLTorDLT vs. DLT trigger selection.
    Produced the ttH,ttW,ttZ,ttbar samples.
    Add the "ATLAS_TRIG_MU_SYST" systematic only to check the effect.

2. Inject the DNN score into Ntuples with instrumental sys. Already scp Sys1-3 folders from plus to SJTU will inject the Ntuples today.  

3. Need to write a specific definition for 2lSS region's data/MC checking as QmisID DD samples missed some variables.

16:25 → 16:35 ATLAS photon ID efficiency & Zgamma analysis

Speaker: Kang Liu

Progress of QT 20230308.pdf

16:35 → 16:50 ATLAS Zgamma analysis

Speakers: Yufeng Wang (TDLI), yufeng wang

expected sensitivity study of HZy search and ALP diphoton search.

16:50 → 17:00 DarkSHINE analysis general

Speakers: Yufeng Wang (TDLI), yufeng wang

• check the rare process in signal event.
• 1MeV       42
  10MeV     32
  20MeV     27
  50MeV     17
  100MeV   19
  500MeV   15
  1000MeV 13
  2000MeV 19
• wrap up baseline 1.5 analysis.

17:00 → 17:10 DarkSHINE tracker study

Speaker: Junhua Zhang

20230307_Junhua.pdf

17:10 → 17:20 DarkSHINE HCAL Study

Speaker: Hanqing Liu

1. writing the 1st chapter of my thesis.

17:20 → 17:30 Silicon strip sensor

Speakers: Hanqing Liu, Junhua Zhang, Kang Liu, Yufeng Wang (TDLI), jialin li, yufeng wang

• 洁净间操作规范
• 探针台操作基本原则

17:30 → 17:35 Non-academic items

Anything else?