Peccei-Quinn invariant extension of the NMSSM

Kwang Sik Jeong, Yutaro Shoji, Masahiro Yamaguchi

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23 Citations (Scopus)


We study a Peccei-Quinn invariant extension of the next-to-minimal supersymmetric Standard Model (NMSSM), which turns out to be free from the tadpole and domain wall problems. Having a non-renormalizable coupling to the axion superfield, the SM singlet added to the Higgs sector can naturally generate an effective Higgs ? term around the weak scale. In the model, the lightest neutralino is dominated by the singlino, which gets a mass only through mixing with the neutral Higgsinos. We explore the phenomenological consequences resulting from the existence of such a relatively light neutralino. The coupling of the SM singlet to the Higgs doublets is constrained by the experimental bound on the invisible Z-boson decay width. Under this constraint, we examine the properties of the SM-like Higgs boson paying attention to its mass and decays. We also demonstrate a UV completion of the model in SU(5) grand unified theory with a missing-partner mechanism.

Original languageEnglish
Article number022
JournalJournal of High Energy Physics
Issue number4
Publication statusPublished - 2012


  • Higgs Physics
  • Supersymmetric Standard Model

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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