NNLOPS accurate associated HZ production with NLO decay ${\rm{H}} \to b\bar{b}$

We present a next-to-next-to-leading order (NNLO) accurate description of associated HZ production, followed by the Higgs boson decay into a pair of b-quarks treated at next-to-leading order (NLO), consistently matched to a parton shower (PS). The matching is achieved by performing reweighting of the HZJ-MiNLO events, using multi-dimensional distributions that are fully-differential in the HZ Born kinematics, to the NNLO results obtained by using the MCFM-8.0 fixed-order calculation. Additionally we include the gg → HZ contribution to the discussed process that appears at the $ \mathcal{O}\left({\alpha}_s^2\right) $ . We present phenomenological results obtained for 13 TeV hadronic collisions.