Production of quarkonia and heavy flavour states in ATLAS and CMS

Associated production of quarkonia is a key observable for understanding the quarkonium production mechanisms, including the separation of single and double parton scattering components. This talk will present the latest differential measurements from ATLAS and CMS of associated quarkonium production. In addition, recent results on heavy flavour production measurements are reported, including angular analysis of B0 and B+ decays, searched for tetraquark states and the observation of Z → J/ψl+l− decay