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Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Abolins, M.; AbouZeid, O. S.; Abramowicz, H.; Abreu, H.; Abreu, R.; Abulaiti, Y.; Acharya, B. S.; Adamczyk, L.; Adams, D. L.; Adelman, J.; Adomeit, Stefanie; Adye, T.; Agatonovic-Jovin, T.; Aguilar-Saavedra, J. A.; Agustoni, M.; Ahlen, S. P.; Ahmadov, F.; Aielli, G.; Akerstedt, H. (2014): Measurement of the production cross-section of ψ(2S)→J/ψ(→μ⁺μ⁻)π⁺π⁻ in pp collisions at √s=7 TeV at ATLAS. In: Journal of High Energy Physics, Vol. 9, 79: pp. 1-49


The prompt and non-prompt production cross-sections for ψ(2S) mesons are measured using 2.1 fb⁻¹ of pp collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits the ψ(2S)→ J/ψ (→μ⁺μ⁻)π⁺π⁻ decay mode, and probes ψ(2S) mesons with transverse momenta in the range 10≤ pT < 100 GeV and rapidity |y| < 2.0. The results are compared to other measurements of ψ(2S) production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production