Asian Physics and Software Meeting

Monday 5 Oct 2026, 15:00 → 16:15 Asia/Tokyo

https://u-tokyo-ac-jp.zoom.us/j/84554632255?pwd=ULm1jI5ElV05sHzpTw1NWeDhHZuFD1.1

meeting ID: 845 5463 2255
passcode: 843129

15:00 → 15:10 Schedule / Announcements / Discussion topics

• FCC PED General Meeting, Oct. 1, going to continue monthly
• Joint EW/Higgs/Top workshop at CERN, January 27-29, 2027, details under discussion
• ILD Detector Optimisation Meeting (former software/analysis meeting), Sept. 30

15:10 → 15:15 Higgs to ss study (Iwate)

Speaker: Harukaze Ito (Iwate university)

• investigating BDT input variables
• compared MC vs. reconstructed
• jet2 direction seems to be inconsistent between MC and reconstructed
• check: overlay / ISR 

15:15 → 15:20 Higgs to ss study (Tokyo)

Speaker: Takumi Seino (The university of Tokyo)

• continue analysis h-->bb/cc/gg
• particle transformer training, adding single-W background event
• check preliminary result, worse than previous
• neutrino channel: samples ready, analysis code almost ready, DNN training taking too long, often get killed; improved after adding tighter pre-selection
• next: charged lepton channel; 2-fermion to be studied by removing overlay
• ISB, international school of beam dynamics, later this month;
• preparing for LCWS
•  

15:20 → 15:30 Higgs to bs / TPC distortion study

Speaker: Kanako Watanabe

• working on H-->bs, using LCFI+
• next step: include SM background
• start signal event selection based on BDT
• visiting CERN from this week to December, for gating GEM experiment
•  

15:30 → 15:35 PFA with machine learning

Speaker: Tatsuki Murata

15:35 → 15:40 Higgs to strange-quark study at FCC-ee

Speaker: Nagomi Dogishi (ICEPP, U. Tokyo)

• JER: why mean value shifted
• barrel / forward: 2.79% vs 3.80%
• investigated energy loss due to neutrinos / acceptance in forward regions: still can not make up 91.2 GeV
• V0 reconstruction: K_S^0, Lambda_0; produced successfully the mass peak
• suggestions for flavor tagging software by FCC community; weaver