Distinctive heavy Higgs boson decays

Abstract

For a heavy Higgs boson above the $t\overline{t}$ threshold we consider three decay modes that could compete with decay to $t\overline{t}$, even in the alignment limit of a 2-Higgs doublet model. The decays $H\ensuremath{\rightarrow}AZ$, ${Z}^{\ensuremath{'}}{Z}^{\ensuremath{'}}$ and ${\ensuremath{\tau}}^{\ensuremath{'}}{\ensuremath{\tau}}^{\ensuremath{'}}$ show that heavy Higgs decays can be an effective probe of new physics both within and beyond this model.