Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models

  title={Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models},
  author={Junjie Cao and Zhaoxia Heng and Jin Min Yang},
  journal={Journal of High Energy Physics},
Various new physics models predict a light CP-odd Higgs boson (labeled as a) and open up new decay modes for Z-boson, such as $ Z \to \bar{f}fa $, Z → aγ and Z → aaa, which could be explored at the GigaZ option of the ILC. In this work we investigate these rare decays in several new physics models, namely the type-II two Higgs doublet model (type-II 2HDM), the lepton-specific two Higgs doublet model (L2HDM), the nearly minimal supersymetric standard model (nMSSM) and the next-to-minimal… Expand

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