Production of ϒ(nS) mesons in Pb + Pb and pp collisions at 5.02 TeV Atlas Collaboration Aguilar Saavedra, Juan Antonio Rodríguez Chala, Mikael A measurement of the production of vector bottomonium states, ϒ(1S), ϒ(2S), and ϒ(3S), in Pb + Pb and pp collisions at a center-of-mass energy per nucleon pair of 5.02 TeV is presented. The data correspond to integrated luminosities of 1.38 nb−1 of Pb + Pb data collected in 2018, 0.44 nb−1 of Pb + Pb data collected in 2015, and 0.26 fb−1 of pp data collected in 2017 by the ATLAS detector at the Large Hadron Collider. The measurements are performed in the dimuon decay channel for transverse momentum pμμ T < 30 GeV, absolute rapidity |yμμ| < 1.5, and Pb + Pb event centrality 0–80%. The production rates of the three bottomonium states in Pb + Pb collisions are compared with those in pp collisions to extract the nuclear modification factors as functions of event centrality, pμμ T , and |yμμ|. In addition, the suppression of the excited states relative to the ground state is studied. The results are compared with theoretical model calculations. 2023-10-23T10:23:54Z 2023-10-23T10:23:54Z 2023-05-22 journal article Aad, G., Abbott, B., Abbott, D. C., Abeling, K., Abidi, S. H., Aboulhorma, A., ... & Ballabene, E. (2023). Production of Υ (n S) mesons in Pb+ Pb and p p collisions at 5.02 TeV. Physical Review C, 107(5), 054912.[https://doi.org/10.1103/PhysRevC.107.054912] https://hdl.handle.net/10481/85178 10.1103/PhysRevC.107.054912 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Physical Society