A light supersymmetric Higgs sector hidden by a standard model-like Higgs

Antonio Delgado, Germano Nardini, Mariano Quiros

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    49 Citations (Scopus)

    Abstract

    Extending the Higgs sector of the MSSM by triplets alleviates the little hierarchy problem and naturally allows for enhancements in the diphoton decay rate of the lightest CP-even Higgs h. In the present paper we analyze in detail the Higgs phenomenology of this theory with m h ≃ 126 GeV. We mostly focus on a light Higgs sector where lightest CP-even scalar A, the next-to-lightest CP-even scalar H and the charged H ± Higgses are naturally at the electroweak scale. It turns out that for any value m A ≃3; m h there is a parameter region at small tan β where the CP-even Higgs sector appears at colliders as the SM one, except for loop-induced corrections. Notably the existence of this SM-like point, which is absent in the MSSM, is shared with supersymmetric theories where there are extra singlets. We also highlight a second parameter region at small m A and small tan β where the h signal strengths, diphoton channel included, are SM-like except those of bottoms and taus which can have at most a 10-15% splitting. Improvements in the A and H ± searches are worth while in order to discriminate this scenario from the SM. © 2013 SISSA, Trieste, Italy.
    Original languageEnglish
    Article number054
    JournalJournal of High Energy Physics
    Volume2013
    Issue number7
    DOIs
    Publication statusPublished - 13 Aug 2013

    Keywords

    • Supersymmetry Phenomenology

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