Search for a Higgs boson decaying to a pair of 125 GeV Higgs bosons (hh) or for a Higgs boson decaying to Zh, with tau leptons in the final state

A search for a heavy scalar Higgs boson H decaying into a pair of lighter (Standard Model like) 125 GeV Higgs bosons h or a pseudo scalar Higgs boson A decaying into a Z boson and an h boson is presented. This search is performed on data collected by CMS experiment during 2012 proton-proton collisions, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. A final state consisting of two $\tau$ leptons and two b-jets is searched for the H $\rightarrow$ hh decay and a final state consisting of two $\tau$ leptons and two additional leptons, compatible with being the decay products of a Z boson, is searched for the decay A $\rightarrow$ Zh. This search is interpreted in the contexts of both the minimal supersymmetric extension to the standard model and two Higgs Doublet Models. No excess is found and upper limits at 95$\%$ confidence level are set on the production cross-section times branching ratio in the mass range 220 $< {\rm m}_{\rm A} <$ 350 GeV and 260 $< {\rm m}_{\rm H} <$ 350 GeV.