Shu's weekly group discussion

Tuesday 21 Jul 2026, 10:00 → 13:35 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N630 - Smart Classroom (Tsung-Dao Lee Institute)

Haidar Mas'ud Alfanda (TDLI, SJTU), Matthias Tartarin (TDLI, SJTU)

Online Zoom meeting room:

https://cern.zoom.us/j/4042031778

(PIN protected, see message from the group chat announcement)

10:00 → 10:05 Introduction & Announcements

Meeting's note: [TBD after the meeting.]

 

Announcements:

 

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Today's focus: 

[1st project/analysis: XXX ]:

• item 1
  • sub-item 1
  • sub-item 2
• item 2
• [...]

[2nd project/analysis: XXX ]:

• item 1
• item 2
• [...]

[...]

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Plans: 

• [optional: indicate which project/analysis it refers to] item 1
• [optional: indicate which project/analysis it refers to] item 2

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10:05 → 10:10 Status

Speaker: Zhijing Zhang (TDLI, SJTU)

  

Today's focus: 

[STCF]:

• Learned the experimental setup and relevant knowledge for CsI crystal time decay test.
• Ran preliminary optical simulations of a CsI crystal using a small number of events.

[DarkSHINE]:

• Studied the optical photon transport simulation of LYSO crystals and the progress is the same as above. A full simulation with sufficient statistics is still in progress.

Plans: 

 

For both projects:

• Learn more about other experimental tests to broaden my understanding of the experimental procedures.
• Run simulations with sufficient statistics to obtain the light output and plot its dependence on the particle interaction position.

10:10 → 10:20 Status

Speaker: Kang Yu (TDLI, SJTU)

[Inclusive ZZ Run3]

1. Read some paper about EFT study, and figure out the goals of ZZ production.
2. Plan to learn how to generate EFT samples in the next step.

[VBS ZZ Run3]

1. EFT study will be helpful to it.

[ZZγ]

1. --

10:20 → 10:30 Status

Speaker: Linjing Duan (TDLI, SJTU)

ZZy

[Finished]

• Studied the HGamGamStar and EasyJet workflows and gained a better understanding of how the two frameworks are connected.
• Reviewed the HZy implementations and prepared an initial mapping of the parts that may be reused or adapted for ZZγ.
• Prepared the overall MC sample request workflow and a checklist for each step.

[Plan]

• Refine the mapping and start a minimal EasyJet ZZγ implementation, focusing on the four-lepton and two-ZZ reconstruction, followed by an initial Run-2 comparison with HGamGamStar.
• Discuss the detailed task allocation，prepare Run-3 JOs based on the Run-2 configurations, and begin Sherpa integration checks for convergence, cross sections, and EVNT generation.

 

 

 

 

 

 

 

 

10:30 → 10:40 Status

Speaker: Jun Wei Lok (TDLI, SJTU)

10:40 → 10:50 Status

Speaker: Zelin Yan (TDLI, SJTU)

pullranking.png

[Today's focus:]

• Wlllv analysis: 
  • Get preliminary SR+WZCR fit result by TREXfitter. Compare different vars mlll mT_lll mT_lllv in WZCR.
  • Change Muon isolation from Loose to tight -> Suppress NonPormpt bkg. 
• HGTD FELIX Monitoring: 
  • Link alignment monitoring on OPCUA server and WinCC OA.
• H2a4b analysis: 
  • Modify Coffea code so that all 2022~2024 mc samples and data can run together. 

[Next plans:]

• Wlllv analysis: 
  • Finish BDT part in INT note.
  • Wait new tight isolation ntuple finished.
• H2a4b analysis: 
  • Prepare for a status report with 2022~2024 mc samples and data, also LLP samples. 

10:50 → 11:00 Status

Speaker: Bai-Hong Zhou (TDLI, SJTU)

[Hyy*]:

• Checked the QCD scale uncertainty for ggF category for Run3 and Run2 workspace;
• Updated the uncertainties components and combination results as followed;

[ssWW]:

• Checked the systematics impact for signal process;
  • Overall, the experimental systematic variations have relatively small effects on the signal distributions. 
  • The largest visible effects mainly originate from jet-related uncertainties.

• Prepare to present our current results with the systmatics and fit study (preliminary significance results) tomorrow;

Plans: 

 

[ssWW]:

• Combine the Run 2 and Run 3 workspace to see the expected significance;
• Prepare the presentation tomorrow;

[DarkSHINE FastSimu]:

• Train the calo-VQ again based on the new samples;

[HWW QE]:

• Learn the Hypothesis test strategy in HZZ QE;
• Train the EveNet with the new input samples;

11:00 → 11:10 Status

Speaker: Xuliang Zhu (TDLI, SJTU)

11:10 → 11:20 Status

Speaker: Zhiyu Zhao (TDLI, SJTU)

11:20 → 11:30 Status

Speaker: Haidar Mas'ud Alfanda (TDLI, SJTU)

Exotic Higgs decay analysis

• Finished the NTuples production with the new XCone algorithm for both H->qq/gg and H->aa->bbbb
• Now running the ParT for H->qq/gg at first to validate the jet tagging efficiency against the CEPC CDR
• Next: add the H->aa->bbbb sample in the training dataset

HCAL R&D

• Placed an order for some electronics components which are lacking for the temperature test
• It is expected to be delivered on Wednesday
• We plan to start the test on Thursday

ATLAS HGTD

• Took a shift for the wafer test
• Presented a summary report in the electronics meeting

11:30 → 11:40 Status

Speaker: Matthias Tartarin (TDLI, SJTU)

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Today's focus: 

[ssWW]:

• Unfolding: Config from Yi is understood. Tests went well, with small issues from my side but I think it is solved. Config also modified to account for more variables. Should be able to share results to internal group in the coming days.

[VBS_Kappa ]:

• UFO modification : On-going, advancing well (at the level on tests implementions through MG5).
   

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Plans: 

• [ssWW] Follow with the unfolding. Waiting for EFT production to start this one too.
• [VBS_Kappa] Thinking about exploring Sherpa3 as a generator, following the ATLAS Run-3 decision for polarization samples. (And following the informal discussion with Tairan the other day regarding Sherpa3 being more advanced than MG5 on polarization theory side).
• [ZZy] Plans to introduce and include Rui Yang to the SJTU/TDLI team's effort this afternoon.

 

11:40 → 12:35 REU: Undergraduate Research Discussions

11:40 Status (w/ Linjing&Danning)

Speakers: Bingxian Li (SPA, SJTU), Jiacheng Shi (SPA, SJTU), Yuning Chen (Zhiyuan College, SJTU), Zhengyang Qian (SPA, SJTU)

11:50 Status (w/ Haydar)

Speakers: Hansheng Ye (Univ. of Manchester (GB)), Mingyu Huang (Univ. of Manchester (GB))

12:00 Status (w/ Matthias&Baihong&Xuliang)

Speaker: Ardijan Lorant Ferati (Eberhard Karls University of Tübingen (DE))