4.4 Article

Higgs phenomenology in the Peccei-Quinn invariant NMSSM

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP01(2014)072

Keywords

Supersymmetry Phenomenology

Funding

  1. National Research Foundation of Korea (NRF) [2012R1A2A2A05003214]
  2. BK21 project
  3. Korean Government (MEST)
  4. NRF of Korea [2011-0017051]
  5. National Research Foundation of Korea (NRF)
  6. Ministry of Education, Science and Technology [2011-0011083]
  7. [23540283]
  8. [23104008]

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We study the Higgs phenomenology in the Peccei-Quinn invariant NMSSM (PQ-NMSSM) where the low energy mass parameters of the singlet superfield are induced by a spontaneous breakdown of the Peccei-Quinn symmetry. In the generic NMSSM, scalar mixing among CP-even Higgs bosons is constrained by the observed properties of the SM-like Higgs boson, as well as by the LEP bound on the chargino mass and the perturbativity bound on the singlet Yukawa coupling. In the minimal PQ-NMSSM, scalar mixing is further constrained due to the presence of a light singlino-like neutralino. It is noticed that the 2 sigma excess of the LEP Zb (b) over bar events at m(b (b) over bar) similar or equal to 98GeV can be explained by a singlet-like 98GeV Higgs boson in the minimal PQ-NMSSM with low tan beta, stops around or below 1TeV, and light doublet-higgsinos around the weak scale.

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