The Peccei-Quinn Axion in the Next-to-Minimal Supersymmetric Standard Model

Abstract

We discuss the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a Peccei-Quinn (PQ) U(1) symmetry. When this symmetry is dynamically broken by the Higgs mechanism, the resulting pseudo-Nambu-Goldstone boson takes the role of an axion. Although much of the allowed parameter space for low values of the PQ scale has been ruled out, many scenarios with a PQ scale > 10^9 GeV remain untested, allowing the NMSSM PQ axion to provide a solution to the strong CP problem and be a good dark matter candidate. Unfortunately the new particle states are so decoupled that they would not be observable at future colliders, and the NMSSM would appear indistinguishable from the minimal model. However, we show that in order to maintain vacuum stability, such a model requires that the heavy Higgs boson states have masses that lie close to approximately mu tan beta. Therefore, a measurement of the Heavy Higgs boson masses at the LHC would allow one to either rule out the NMSSM PQ axion, or provide tantalizing circumstantial evidence for its existence.

arXiv comment15 pages (inc frontpage), 2 eps in one figure

References in corpus (5)

• The Snowmass Points and Slopes: Benchmarks for SUSY Searches
• The Higgs Sector of the Next-to-Minimal Supersymmetric Standard Model
• Results from a High-Sensitivity Search for Cosmic Axions
• Red giant bound on the axion-electron coupling reexamined
• Light Axion within the Next-to-Minimal Supersymmetric Standard Model

Cited by in corpus (12)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Exotic Decays of the 125 GeV Higgs Boson
• Constrained Exceptional Supersymmetric Standard Model with a Higgs Near 125 GeV
• E6 inspired SUSY models with exact custodial symmetry
• Solving the Hierarchy Problem with a Light Singlet and Supersymmetric Mass Terms
• Four Taus at the Tevatron
• Simultaneous Solutions of the Strong CP and Mu Problems
• An Interesting NMSSM Scenario at the LHC and LC
• Inflationary Solution to the Strong CP and $\mu$ Problems
• Phenomenological aspects of Supersymmetry: SUSY models and electroweak symmetry breaking
• A Review of the Exceptional Supersymmetric Standard Model
• Theoretical aspects of electroweak symmetry breaking in SUSY models