Two higgs doublet models for the LHC higgs boson data at s \sqrt{s} = 7 and 8 TeV

Sanghyeon Chang, Sin Kyu Kang, Jong Phil Lee, Kang Young Lee, Seong Chan Park, Jeonghyeon Song

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40 Citations (Scopus)


Updated LHC data on the new 126 GeV boson during the 7 and 8 TeV runnings strengthen the standard model Higgs boson interpretation further. Through global χ 2 fit analysis, we investigate whether the new particle could be one of the scalar particles in two Higgs doublet models. Four types of the model (I, II, X and Y) are comprehensively studied. Considering the recent analysis on the spin-parity of the new boson, we take two scenarios: it is either the lighter CP-even one or the heavier CP-even one. It is found that the current LHC Higgs data constrain the model quite strongly. Only narrow region along the decoupling line and a separate small island are allowed in Type II, X, and Y. Type I is exceptional with much larger allowed space. We also find that the current data are compatible with the possibility that the light Higgs boson h 0 is hidden in the mass window of 90-100 GeV.

Original languageEnglish
Article number101
JournalJournal of High Energy Physics
Issue number9
Publication statusPublished - 2014 Sept 30

Bibliographical note

Publisher Copyright:
© 2014 The Author(s).

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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