e+e−→hhZ in the B−L symmetric SSM

Abstract

The double Higgs boson production through e þ e − → hhZ is analyzed in the minimal supersymmetric extension of the Standard Model (SM) with the local gauge symmetry Uð1Þ B−L , where h denotes the lightest Higgs boson with 125 GeV. Considering the constraints from the updated prediction data, we find that the production cross section of this process in the model depends on some parameters strongly.