A solution to the mu/B mu problem in gauge mediation with hidden gauge symmetry

作者：Hamaguchi Koichi^*; Nakayama Kazunori; Yokozaki Norimi

来源：The Journal of High Energy Physics, 2012, (8): 006.

DOI：10.1007/JHEP08(2012)006

• Supersymmetry Phenomenology

We propose a solution to the mu/B mu problem in gauge-mediated SUSY breaking, which does not suffer from the SUSY CP problem and is consistent with the solution to the strong CP problem. The model is based on Z(3)-invariant NMSSM with additional vector-like matter charged under a hidden gauge group as well as the standard model gauge groups. The dynamical scale of the hidden gauge symmetry is set to be around 10GeV. We show that this simple extension of the NMSSM resolves the domain wall problem and the mu/B mu problem without a dangerous CP angle. The relative sign among gaugino masses and the mu parameter can be preferable in terms of the muon anomalous magnetic moment. We also discuss cosmological issues of this model, especially the effects of long-lived particles in the hidden gauge sector. The hidden glueball may cause a late-time entropy production, which opens up a possibility that the light gravitino can be a dominant component of dark matter while leptogenesis scenarios work successfully. There is a region where the electroweak symmetry is successfully broken with similar to 10TeV stops, and the Higgs mass of similar to 125GeV can be explained.

• 出版日期2012-8