di-Higgs analysis working meeting

Wednesday 26 Nov 2025, 14:00 → 15:00 Europe/Zurich

https://desy.zoom.us/j/64781856087

Passcode: 314159 

1 Intro

Speaker: Jenny List (Deutsches Elektronen-Synchrotron (DE))

2 Activities at DESY

Speakers: Bryan Bliewert, Julie Munch Torndal (DESY)

Di_Higgs_Analysis_2025_11_26_6q_validation.pdf

Bryan: connecting the "loose ends" in the lepton channel

• analysis of updated 4f sl samples ongoing
• SGV fails to process ca. 4-6% of 4f leptonic samples (the LCIO generator files itself are readable until the end, so it's not a file transfer error. according to Mikael, the error is due to an actually faulty event generated in each file, i.e. it's a bug in Whizard); workaround: skip these files for now
• no issues with 4f hadronic samples -> to be included in full analysis
• MVA optimization ongoing (one multiclass BDT instead of multiple binary ones)
• including the matrix elements
• rework of data I/O [ROOT <> Python/HDF5 world] done

3 Activities at SLAC

Speakers: Caterina Vernieri (SLAC National Accelerator Laboratory (US)), Dimitris Ntounis (SLAC National Accelerator Laboratory (US))

4 Activities at U Tokyo

Speakers: Junping Tian (University of Tokyo), Taikan Suehara (ICEPP, The University of Tokyo)