The HZZ′ Coupling and the Higgs-Strahlung Production pp → ZH at the LHC

The Higgs-strahlung production process pp → Z′ → ZH is an important process for studying the HZZ′ interaction. We take the B − L model and the nonuniversal S U(2)1 × S U(2)2 × U(1) Y model as two examples and investigate their correction effects on ZH production at the LHC. Our numerical results show that, considering constraints on these two new physics models, the contributions of the B − L model to the ZH production cross section are very small, while the S U(1)1 × S U(2)2 × U(1) Y model can generate significant contributions.