Fingerprinting non-minimal Higgs sectors

Understand

After the discovery of the standard-model-like Higgs boson at the LHC, the structure of the Higgs sector remains unknown.

• We discuss how it can be determined by the combination of direct and indirect searches for additional Higgs bosons at future collider experiments.
• First of all, we evaluate expected excluded regions for the mass of additional neutral Higgs bosons from direct searches at the LHC with the 14 TeV collision energy in the two Higgs doublet models with a softly-broken $Z_2$ symmetry.
• Second, precision measurements of the Higgs boson couplings at future experiments can be used for the indirect search of extended Higgs sectors if measured coupling constant with the gauge boson slightly deviates from the standard model value.