Measurement of ψ(2S) production cross-sections in proton-proton collisions at $\sqrt{s}$=7 and 13 TeV

The cross-sections of ψ(2S) meson production in proton-proton collisions at $\sqrt{s}$=13 TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275 pb${}^{\text{â}\text{ˆ}\text{’}1}$. The production cross-sections for prompt ψ(2S) mesons and those for ψ(2S) mesons from b-hadron decays (ψ(2S)-from- b) are determined as functions of the transverse momentum, p${}_T$, and the rapidity, y, of the ψ(2S) meson in the kinematic range 2T<20 GeV/c and 2.0s=7 TeV is also performed using data collected in 2011, corresponding to an integrated luminosity of 614 pb${}^{\text{â}\text{ˆ}\text{’}1}$. The integrated production cross-sections in the kinematic range 3.5T<14 GeV/c and 2.0<y<4.5 are σ(prompt ψ(2S),7 TeV)=0.471±0.001 (stat)±0.025 (syst)μb,σ(ψ(2S)-from- b,7 TeV)=0.126±0.001 (stat)±0.008 (syst)μb. All results show reasonable agreement with theoretical calculations.