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We estimate model-independent bounds that could be obtained on the anomalous$ZZH$ vertex using polarization parameters of the $Z$ boson produced in theHiggstrahlung process at the LHC. We calculate the eight independentpolarization parameters from the spin density matrix elements of the $Z$, whichcan probe underlying new physics contributions to $ZH$ production. By using theapproach that connects these polarization observables to the coefficients inthe angular distribution of the decay products of the $Z$, we estimate thelimits on the anomalous $ZZH$ coupling that can be obtained at the 14 TeV LHC.

Study of anomalous gauge-Higgs couplings using $Z$ boson polarization at LHC