Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h to tau tau

A search for a heavy scalar boson H decaying into a pair of lighter standard-modellike 125 GeV Higgs bosons h and a search for a heavy pseudoscalar boson A decaying into a Z and an h boson are presented. The searches are performed on a dataset corresponding to an integrated luminosity of 19.7 fb−1 of pp collision data at a centreof-mass energy of 8 TeV, collected by CMS in 2012. A final state consisting of two τ leptons and two b jets is used to search for the H→ hh decay. A final state consisting of two τ leptons from the h boson decay, and two additional leptons from the Z boson decay, is used to search for the decay A → Zh. The results are interpreted in the context of two-Higgs-doublet models. No excess is found above the standard model expectation and upper limits are set on the heavy boson production cross sections in the mass ranges 260 < mH < 350 GeV and 220 < mA < 350 GeV. Published in Physics Letters B as doi:10.1016/j.physletb.2016.01.056. c © 2016 CERN for the benefit of the CMS Collaboration. CC-BY-3.0 license ∗See Appendix B for the list of collaboration members ar X iv :1 51 0. 01 18 1v 2 [ he pex ] 2 7 A pr 2 01 6