  Many models of electroweak symmetry-breaking with an extended Higgs sector
exhibit improved naturalness, wherein the new physics scale, at which quadratic
divergences of Higgs mass parameters due to top quark loops are cut off, can be
pushed beyond the reach of the Large Hadron Collider without unnatural fine
tuning. Such models include examples where the new physics is supersymmetry,
implying that supersymmetry may still solve the hierarchy problem, even if it
eludes detection at the LHC.
