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Measurement of the production cross-section of $ψ(2S)\to J/ψ(\toμ^+μ^-)π^+π^-$ in $pp$ collisions at $\sqrt{s}=7$ TeV at ATLAS

Abstract

The prompt and non-prompt production cross-sections for mesons are measured using 2.1 fb of collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits the decay mode, and probes mesons with transverse momenta in the range GeV and rapidity . The results are compared to other measurements of production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production.