hhh Coupling in SUSY models after LHC run I

Abstract

We examine the Higgs triple coupling in MSSM and NMSSM under current constraints, which include the LHC measurements, Higgs data, B physics, electroweak precision observables, relic density and so on. The ratio ${\lambda }_{hhh}^{\mathrm{MSSM}}/{\lambda }_{hhh}^{\mathrm{SM}}$ is above 0.97, due to the highly constrained parameter space. While the ratio ${\lambda }_{hhh}^{\mathrm{NMSSM}}/{\lambda }_{hhh}^{\mathrm{SM}}$ can reach 0.1 under current constraints. The precise measurement in future collider will give a tighter constraint to the Higgs triple coupling in MSSM and NMSSM.

Comments: 4 pages, 4 figures, proceeding of the 2nd Toyama Workshop on "Higgs as a Probe of New Physics 2015", 11-15 February 2015