Related Experiment Video
Updated: May 31, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Probing strong first-order electroweak phase transition scenarios in two-Higgs-doublet model with FCC-ee/CEPC
Anisha1,2, Francisco Arco3, Stefano Di Noi1
1Institute for Theoretical Physics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.
European Physical Journal Plus
|May 29, 2026
Summary
Future colliders like FCC-ee can probe the electroweak phase transition. Precision Higgs measurements offer sensitive tests for physics beyond the Standard Model.
Area of Science:
- Particle Physics
- Cosmology
- High Energy Physics
Background:
- The Standard Model (SM) describes fundamental particles and forces.
- The electroweak phase transition (EWPT) is crucial for baryogenesis.
- A strong first-order EWPT (SFOEWPT) is a key feature in many Beyond Standard Model (BSM) theories.
Purpose of the Study:
- Investigate FCC-ee and CEPC potential to test SFOEWPT in the CP-conserving type I two-Higgs-doublet model.
- Assess the sensitivity of projected measurements to SFOEWPT-favored parameter space.
- Explore indirect probes of electroweak-scale BSM physics.
Main Methods:
- Confronting SFOEWPT parameter space with projected electroweak precision data.
- Analyzing projected Higgs measurements at future colliders.
- Considering searches for additional scalar states.
- Calculating radiative corrections to e+e- -> hZ production.
Main Results:
- Deviations in e+e- -> hZ cross sections can exceed sub-percent precision at lepton colliders.
- These deviations can occur even if LHC and Z-pole measurements agree with the SM.
- Precision Higgs-strahlung measurements serve as sensitive indirect probes.
Conclusions:
- Future electron-positron colliders offer powerful tools to test SFOEWPT.
- Precision Higgs measurements provide a sensitive indirect probe of BSM physics at the electroweak scale.
- The CP-conserving type I two-Higgs-doublet model can be constrained by these future measurements.
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