Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a $Z$ boson in the ${\ell }^{+}{\ell }^{-}t\bar{t}$ and $\nu \bar{\nu }b\bar{b}$ final states using 140 fb${}^{-1}$ of data collected with the ATLAS detector

ATLAS Collaboration

A search for a heavy CP-odd Higgs boson, $A$, decaying into a $Z$ boson and a heavy CP-even Higgs boson, $H$, is presented. It uses the full LHC Run 2 dataset of $pp$ collisions at…