LCVision - Meeting with Higgs@250 and Higgs at highest energy teams

27 Jan 2025, 22:45 → 28 Jan 2025, 00:00 Europe/Zurich

Roman Poeschl is inviting you to a scheduled Zoom meeting.

Topic: LCVision - Physics Part
Time: This is a recurring meeting Meet anytime
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Meeting ID: 681 6574 0245
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Meeting ID: 681 6574 0245
Passcode: 283565

 

Present: Caterina, Dirk, Kei, Georg, Johannes, Maggie, Shinya, Jenny, R.P.

• Generally point out clearly, where possible and adequate, game changing nature of LC measurements 
  • Suppose that the facility will reach at least 1 TeV (and that LCVision will lead to a coherent plan to reach even a bit more)
• Single Higgs
  • Higgs@250 GeV -> Single Higgs to cover also single Higgs production in e.g. WW fusion
    • Studies for Higgs@250 GeV from ECFA report (?)
    • Results for higher energies from Snowmass report
  • Question about Higgs mass 14 MeV for ILC compard with 5 MeV for FCCee
    • FCCee contains systematics 
    • What is a reasonable precision for the Higgs mass? 
    • Off-shellness of W in e.g. h->WW should not influence the precision on Higgs mass
  • Point out how the single Higgs measurements enable already distinction of models 
  • Check with Aidan prospects for CLIC with higher luminosities 
• Higgs at highest energies
  • When presenting precisions on the Higgs self-coupling and the impact on BSM searches it is important that underlying assumptions are made clear
    • We have to give a shining example to motivate others to follow this example ;-)  
  • As before point out how the Higgs self-coupling measurement will be able to discover (or at least gives strong evidence) for BSM physics and give relevant examples
    • (most is already in Shinya's talk at LCVision meeting)
  • Maggie prepares an update on interplay Higgs self-coupling and GW 
    • Sneak preview given at meeting, question on NLO impact on y axis (was precision on gHZZ as far as I recall)
  • Remark R.P.: gammagamma collision may/would/will lead to a complementary determination of Higgs self-coupling, will be editorial work where to put it on the end