Higgs boson mass and muon g − 2 with strongly coupled vectorlike generations

We study the Higgs boson mass and the muon anomalous magnetic moment (the muon g−2) in a supersymmetric standard model with vectorlike generations. The infrared physics of the model is governed by strong renormalization-group effects of the gauge couplings. That leads to sizable extra Yukawa couplings of Higgs doublets between the second and vectorlike generations in both quark and lepton sectors. It is found with this property that there exist wide parameter regions where the Higgs boson mass and the muon g−2 are simultaneously explained.