Prompt and non-prompt J/ψ and ψ(2S) suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration A measurement of J/ψ and ψ(2S) production is presented. It is based on a data sample from Pb+Pb collisions at √sNN=5.02 TeV and pp collisions at s√=5.02 TeV recorded by the ATLAS detector at the LHC in 2015, corresponding to an integrated luminosity of 0.42 nb−1 and 25 pb−1 in Pb+Pb and pp, respectively. The measurements of per-event yields, nuclear modification factors, and non-prompt fractions are performed in the dimuon decay channel for 9<pμμT<40 GeV in dimuon transverse momentum, and −2<yμμ<2 in rapidity. Strong suppression is found in Pb+Pb collisions for both prompt and non-prompt J/ψ , increasing with event centrality. The suppression of prompt ψ(2S) is observed to be stronger than that of J/ψ , while the suppression of non-prompt ψ(2S) is equal to that of the non-prompt J/ψ within uncertainties, consistent with the expectation that both arise from b-quarks propagating through the medium. Despite prompt and non-prompt J/ψ arising from different mechanisms, the dependence of their nuclear modification factors on centrality is found to be quite similar. 2019-11-13T12:23:15Z 2019-11-13T12:23:15Z 2018-09-21 info:eu-repo/semantics/article Abraham, N. L., Allbrooke, B. M. M., Asquith, L., Cerri, A., Jones, S. D., Shaw, K., ... & Trovato, F. (2018). Prompt and non-prompt J/ψ J/ψ and ψ (2S) ψ (2S) suppression at high transverse momentum in 5.02 TeV 5.02 TeV Pb+ Pb collisions with the ATLAS experiment. European Physical Journal C-Particles and Fields, 78(762), 1-28. http://hdl.handle.net/10481/57867 10.1140/epjc/s10052-018-6219-9 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Springer Nature