Next-to-minimal $R$-symmetric model: Dirac gaugino, Higgs mass and invisible width

Hiroaki Nakano; Masaki Yoshikawa

doi:10.1093/ptep/ptw007

paper

Next-to-minimal $R$ -symmetric model: Dirac gaugino, Higgs mass and invisible width

arXiv:1512.02377 · doi:10.1093/ptep/ptw007

Abstract

We study a singlet extension of the minimal $U (1)_{R}$ symmetric model, which shares nice properties of Dirac gauginos and $R$ -symmetric Higgs sector. At the same time, a superpotential coupling of $R$ -charged singlet to the Higgs doublets can give a substantial contribution to the Higgs boson mass. We show that the 125 GeV Higgs boson is consistent with perturbative unification, even if the SUSY scale is as low as 1 TeV and if the $D$ -term Higgs potential is suppressed as is often the case in Dirac gauginos. The model also contains a light scalar and fermion, pseudo-moduli and pseudo-Goldstino: The former gets a mass mainly from SUSY breaking soft terms, in addition to a small explicit $R$ -symmetry breaking for the latter. We examine how the Higgs mass and width are affected by these light degrees of freedom. Specifically we find thatdepending on parameters of $R$ -charged Higgses, the pseudo-moduli lighter than a half of the SM-Higgs boson mass is still allowed by the constraints from invisible decays of the $Z$ and Higgs bosons. We also find that such a light scalar can reduce the Higgs boson mass, at most by a few percents.

32 pages, 24 figures. typo corrected

Next-to-minimal $R$ -symmetric model: Dirac gaugino, Higgs mass and invisible width

Abstract

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Next-to-minimal R-symmetric model: Dirac gaugino, Higgs mass and invisible width

Abstract

References in corpus (16)

Cited by in corpus (3)

Next-to-minimal $R$ -symmetric model: Dirac gaugino, Higgs mass and invisible width