Open heavy flavour and J/ψ production in proton–proton collisions measured with the ALICE experiment at LHC

Open heavy flavour and J/ψ production are powerful tools to test pQCD predictions in proton–proton (pp) collisions in the new LHC energy regime. In addition, they provide the necessary reference for the ALICE heavy-ion program. The ALICE experiment at the LHC collected pp collision data at image and 2.76 TeV in 2010 and 2011. We report here the latest results of open heavy flavour and J/ψ production at both mid- and forward-rapidity via several hadronic and leptonic decay channels. These include, among other topics, the first LHC result on J/ψ polarization, multiplicity dependence of the J/ψ production, D-meson measurement down to low transverse momentum image and J/ψ production from B-hadron decays. Comparisons with different theoretical models will be discussed as well.