Exploring the near alignment region in the two-Higgs doublet model
|講演者||愛甲 将司 氏（大阪大学）|
|連絡先||松戸竜太郎 / matsudo-AT-post.kek.jp|
In this talk, I discuss the phenomenology of the near alignment region in the two-Higgs doublet model (2HDM). It has turned out that the couplings of discovered Higgs boson with the SM particles are consistent with those in the SM within the experimental and theoretical uncertainties. One way to realize this SM-like limit in the 2HDM is the decoupling of the additional Higgs bosons. However, there is another way which is so-called alignment without decoupling motivated by some new physics scenario such as the electroweak baryogenesis. I show that the near alignment region where the Higgs couplings slightly deviate from the SM values can be widely explored by utilizing the synergy between the future hadron and lepton colliders. I would like to remark that this near alignment scenario is naturally predicted if the alignment is realized by the global symmetry of the Higgs potential at a higher energy scale. This talk is based on arXiv: 2009.04330 and 2010.15057.