Exploring Mirror Twin Higgs Cosmology with Present and Future Weak Lensing Surveys

Understand

We explore the potential of precision cosmological data to study non-minimal dark sectors by updating the cosmological constraint on the mirror twin Higgs model (MTH).

• The MTH model addresses the Higgs little hierarchy problem by introducing dark sector particles.
• In this work, we perform a Bayesian global analysis that includes the latest cosmic shear measurement from the DES three-year survey and the Planck CMB and BAO data.
• In the early Universe, the mirror baryon and mirror radiation behave as dark matter and dark radiation, and their presence modifies the Universe's expansion history.