Publication | Open Access

Observation and measurements of the production of prompt and non-prompt $$\varvec{\text {J}\uppsi }$$ J ψ mesons in association with a $$\varvec{Z}$$ Z boson in $$\varvec{pp}$$ p p collisions at $$\varvec{\sqrt{s}= 8\,\text {TeV}}$$ s = 8 TeV with the ATLAS detector