Asian Physics and Software Meeting

Monday 28 Sept 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

• News from JPS 2026, by Taikan Suehara
  • ITN talk by Sakai san, ~50 participants
  • contributing talks by students, on silicon / machine learning 
  • JAHEP general meeting, Asai san said we need to revisit ILC project scope
  • CFP report
• News from ILD workshop at CERN, by Ryu Sawada
  • for ILD 1st priority is FCC-ee
  • 6 detectors now, only 4 will be selected
  • aiming for LoI at around 2028
  • ILD studies at high energies are done, but missing flavor studies at Z-pole
  • re-optimize detector design for FCC-ee, if no high energy run
  • simulation / reconstruction to be done based on standard FCC-ee software eco system
  • stand configuration of ILD for physics study
  • FCC-ee is collecting MC production request

 

• FCC Detector Concept Meeting, Oct. 5, 4pm Geneva
• 1st FCC PED General Meeting, Oct. 1, 2pm Geneva
• FCC-hh workshop, Sept. 22

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

Speaker: Harukaze Ito (Iwate university)

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

Speaker: Takumi Seino (The university of Tokyo)

• talk at JPS, not much progress
• continue to work on machine learning for flavor tagging with transformer
• to finalize h-->bb/cc/gg/ss with Z-->qq channel; start preparing Z-->ll / nunu
• more understanding about results on h-->cc, why much worse than expected; some MC truth study; 
• to check impact of overlay 

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

Speaker: Kanako Watanabe

• h-->bs significance with background h-->bb/cc/gg
• scanned the cut value on b-bar tag: 
  • BR~1%, maximum significance 10 sigma
  • ~0.1%, 1.75 sigma
  • 900 fb-1 (-0.8,+0.3)
• B-Bbar mixing in generator

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)

• FCC jet energy resolution: 3-4% consistent with ILC
• thrust cut for events