ZH production in gluon fusion at NLO in QCD

We present fully differential next-to-leading order results for Higgs production in association with a Z boson in gluon fusion. Our two-loop virtual contributions are evaluated numerically using sector decomposition, including full top-quark mass effects, and supplemented at high p T by an analytic high-energy expansion to order m_Z^4,m_H^4,m_t^32 . Using the expanded results we also present a study of the top-quark mass scheme uncertainty at large p T .