ILC Wiki

Speculation –What would have happen in the early Universe?
- Mechanism of mass generation
- (If Electroweak Baryogenesis?)
Mystery of mass and generation: What determines the mass of particles. What discriminates the three generations? Is this due to single reason – SM Higgs? Or any other reason?
Scalar particle.if exists (unique, and origin of many problems in SM

Why Higgs physics is exciting? Why Higgs is the key to understand the nature?
- Almost nothing is known
- Mystery of Vacuum.
- Higgs is the origin of the present problems in our understanding of Nature
- Yukawa-coupling determines mass and generation?
- Self-coupling determines the Vacuum
- Telescope to see the new physics
  - Different physics models and different phenomena
  - Models
    - Standard Model and Two-Higgs doublet model
    - SUSY
      - MSSM
      - NMSSM, XMSSM,,
    - If CP mixing, what happens ?
    - Electroweak Baryogenesis?

What has already known and what would be found at Tevatron and LHC?
Current knowledge of Higgs mass boundary
- Experimental (SM, MSSM, Coupling limit in Model independent way)
- theoretical boundary
  - SM
  - SUSY models
Tevatron reach
LHC potential (Discovery reach and potential for coupling)

How to produce at ILC?
- Higgsstrahlung, Fusion process
- Yukawa process
- Self-coupling and multi-Higgs production

How to investigate at ILC
- Experimental key techniques (quark tagging b/c, jet-energy)
- Investigation channels/Modes (SM/2HDM/MSSM/NMSSM)
- Analyses: model independent research
- Analyses: combination with other findings

How well ILC can answer the questions? Experimental Sensitivities for 120-140, 160, 200, 300 GeV
- Discovery limit of the production cross-section, branching ratio
- Quantum numbers
- Mass measurement precision
- Gauge coupling (ZZH, WWH)
- Yukawa (b, c, tau, missing)
- Top-Yukawa
- Challenge for mode decaying to muons, gammas
- Self-coupling
- Challenge on measurements on CP violation
- Answers to be given to new physics
  - Case-A SM
  - Case-B MSSM
  - Case-C SUSY beyond MSSM
  - Case-D Large extra-dimensions, radion mixing
  - Case-E CP-violation
- Answers to be given to the Mystery of Universe, Vacuum, generation, mass

Combination of LHC and ILC
- Some senario
  - Heavy Higgs mass prediction by ILC and compare LHC results.
  - Measurements of SUSY model parameters
  - Discovery potential of Heavy Higgs, discremination of H and A in MSSM, discremination of MSSM and beyond.