Inclusive J/ψ production at mid-rapidity in pp collisions at $ \sqrt{s} $ = 5.02 TeV

Inclusive J/ψ production is studied in minimum-bias proton-proton collisions at a centre-of-mass energy of $ \sqrt{s} $ = 5.02 TeV by ALICE at the CERN LHC. The measurement is performed at mid-rapidity (|y| < 0.9) in the dielectron decay channel down to zero transverse momentum p$_{T}$, using a data sample corresponding to an integrated luminosity of L$_{int}$ = 19.4 ± 0.4 nb$^{−}^{1}$. The measured p$_{T}$-integrated inclusive J/ψ production cross sec- tion is dσ/dy = 5.64 ± 0.22(stat.) ± 0.33(syst.) ± 0.12(lumi.) μb. The p$_{T}$-differential cross section d$^{2}$σ/dp$_{T}$dy is measured in the p$_{T}$ range 0–10 GeV/c and compared with state-of- the-art QCD calculations. The J/ψ 〈p$_{T}$〉 and $ \left\langle {p}_{\mathrm{T}}^2\right\rangle $ are extracted and compared with results obtained at other collision energies.