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Kun's weekly discussion with students

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N642 (TDLI)

N642

TDLI
Description

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

Meeting number: 695-8098-7502

    • 16:00 → 16:05
      Introduction 5m

      General items.

      Speaker: Prof. Kun LIU (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)
    • 16:05 → 16:15
      ATLAS ttWML and ttHML analyses status 10m
      Speaker: Nihal BRAHIMI (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)

      ttWML analysis status:

      • The analysis closure meeting took place on Friday at a special Top plenary and it went overall smoothly. There was a lengthy discussion however about the regularization method used for the unfolding which seems to be too strong but stress tests were already performed to gain confidence in the method. The team will get in touch with the stats forum for further feedback but this will not delay the first ATLAS circulation planned for Feb 24th.
      • Latest version of the INT note (v07) and paper draft (v07) were circulated to the EB and Top group. We are currently addressing feedback and comments received on the paper draft to be ready for circulation.

      ttHML analysis status:

      • Decision made to adopt the 3D MVA setup for defining the SR discriminant in the 2lSS channel but the choice of BDT vs DNN is still not made. The performance in a realistic fit setup based on latest production will need to be assessed to guide the choice.
      • Jialin currently checking the MC modeling of all the input training variables to rule out any with poor modeling.
      • The option to adopt a looser b-tagging WP for the events selection is being considered as it was shown to result in enhanced MVAs performance. Currently working on testing the impact of adopting this WP on the template fit fakes estimation.
    • 16:15 → 16:25
      ATLAS ttH analysis 10m
      Speaker: jialin li
      20230222_ttH.pdf
    • 16:25 → 16:35
      ATLAS photon ID efficiency & Zgamma analysis 10m
      Speaker: Kang Liu

      QT

      I am trying to add code that applies the Smirnov transform to Rel22 TagAndProbe framework to get photon-like sample. 

      EGamm Workshop preparation

      I am writing the slides for the EGamm workshop in March and I intend to rehearse them next Wednesday so that I can get suggestion and revise them. 

       

    • 16:35 → 16:50
      ATLAS Zgamma analysis 15m
      Speakers: Yufeng Wang (TDLI), yufeng wang
    • 16:50 → 17:00
      DarkSHINE analysis general 10m
      Speakers: Yufeng Wang (TDLI), yufeng wang
      analysis20230222.pdf
      • 1e9 1.5.5 inclusive sample produced by Hanqing.
        • track reco. algorithm updated, "bad track" rate reduced. (5%/15% --> 1%/6% for tag./rec.)
        • track chi2 fixed.
        • full HCAL calibration.
        • list of HCAL particle type & energy.
      • to be produced (waiting for more space):
        • 1e10 1.5.5 inclusive sample.
        • 1.5.5 signal sample.
        • SideHCAL information.
        • list of HCAL particle position.
    • 17:00 → 17:10
      DarkSHINE tracker study 10m
      Speaker: Junhua Zhang
      20230222-Junhua.pdf
    • 17:10 → 17:20
      DarkSHINE HCAL Study 10m
      Speaker: Hanqing Liu

      1.Finsihed the neutron distribution graph

      The information of particle  entering  before HCAL, such as energy, position is easy to get now.

      2. The result of the 1e7 sample looks good. Because of lack of enough hard disk space, I am trying to get a 1e9 result now .

      To do

      1. some problems in analyzing the 1e9 sample, working on it

    • 17:20 → 17:30
      Silicon strip sensor 10m
      Speakers: Hanqing Liu, Junhua Zhang, Kang Liu, Yufeng Wang (TDLI), jialin li, yufeng wang
      AC-LGAD based 4D tracking detector R&D for the future lepton collider.ppt
      sensor test discussion.pdf
      • IV test validation; charge collection + spatial resolution; time resolution. 
      • discussion with IHEP: https://indico-tdli.sjtu.edu.cn/event/1552/
        • waiting for Mengzhao's reply about PCB board.
        • heading to IHEP once wire bonding (2 boards) is booked.
      • further SJTU PCB board production (64 channel? for 2x4 cm sensor): discussion with Prof. Wu Weihao
    • 17:30 → 17:35
      Non-academic items 5m

      Anything else?