Exotic Higgs decays in Type-II 2HDMs at the LHC and future 100 TeV hadron colliders

Felix Kling, Honglei Li, Adarsh Pyarelal, Huayang Song, Shufang Su

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The exotic decay modes of non-Standard Model (SM) Higgses in models with extended Higgs sectors have the potential to serve as powerful search channels to explore the space of Two-Higgs Doublet Models (2HDMs). Once kinematically allowed, heavy Higgses could decay into pairs of light non-SM Higgses, or a non-SM Higgs and a SM gauge boson, with branching fractions that quickly dominate those of the conventional decay modes to SM particles. In this study, we focus on the prospects of probing Type-II 2HDMs at the LHC and a future 100 TeV pp collider via exotic decay channels. We study the three prominent exotic decay channels: A → HZ, A → H±W and H± → HW±, and find that a 100-TeV pp collider can probe most of the region of the Type-II 2HDM parameter space that survives current theoretical and experimental constraints with sizable exotic decay branching fraction through these channels, making them complementary to the conventional decay channels for heavy non-SM Higgses.

Original languageEnglish (US)
Article number31
JournalJournal of High Energy Physics
Issue number6
StatePublished - Jun 1 2019
Externally publishedYes


  • Beyond Standard Model
  • Higgs Physics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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