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di-Higgs analysis working meeting

→ Europe/Zurich
Description

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


Passcode: 314159 

    • 09:00 → 09:10
      Intro 10m
      Speaker: Jenny List (Deutsches Elektronen-Synchrotron (DE))
    • 09:10 → 09:25
      Activities at DESY 15m
      Speakers: Bryan Bliewert, Julie Munch Torndal (DESY), Mikael Berggren (Deutsches Elektronen-Synchrotron (DE))
      Di_Higgs_Analysis_2026_06_17_hyperparam.pdf
    • 09:25 → 09:35
      Activities at SLAC 10m
      Speakers: Caterina Vernieri (SLAC National Accelerator Laboratory (US)), Dimitris Ntounis (SLAC National Accelerator Laboratory (US))
    • 09:35 → 09:45
      Activities at U Tokyo 10m
      Speakers: Junping Tian (University of Tokyo), Taikan Suehara (ICEPP, The University of Tokyo)
      • tested generator with non-SM self-coupling
        • simplest approach seems to be using SM_ac_CKM model, which was originally designed for studying anomalous gauge couplings
        • the trilinear Higgs self-coupling can be scaled via parameter fac_gh3 (default is one, like kappa_lambda)
        • also possible to scale the quartic self-coupling via fac_gh4
        • next step to produce full samples for lepton channel, e1e1hh, e2e2hh, with kappa_lambda = 2?  
          • --> check the minimum in WWF, about 1.5
          • --> preferably a few points with large enough lever arm

       

      • investigated resonance insertion issue in ZZH samples
        • turns out to be fine in most channels, llqqh, nnqqh, etc, except qqqqh
        • next step to produce qqqqh sample with resonance insertion