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Akindinov, A.; Andrei, C.; Antinori, F.; Aresti, M.; Arnaldi, R.; Baek, Y. W.; Barreto, L.; Basu, S.; Beltran, Y. A. V.; Bluhme, N.; Bock, F.; Bodova, T.; Buckland, M. D.; Burmasov, N.; Carvalho, L. A. D.; Castillo Castellanos, J.; Chapeland, S.; Chattopadhyay, S.; Cortese, P.; Dzalaiova, N.; Evans, D.; Faggin, M.; Faivre, J.; Galvan, C. D.; Garcia-Solis, E.; Gasik, P.; Gay Ducati, M. B.; Ghosh, C.; Gordeev, P.; Gorgon, M.; Guernane, R.; Hamdi, A.; Hellbär, E.; Horzyk, A.; Ilkaev, R.; Ippolitov, M.; Iversen, K. E.; Jakubowska, M. J.; Jung, J.; Jung, M.; Jusko, A.; Kaplin, V.; Kebschull, U.; Keidel, R.; Khuntia, A.; Kim, B.; Kim, C.; Kim, T.; Kiselev, S.; Kuskov, V.; Liu, J.; Lokos, S.; Lömker, J.; Loncar, P.; Lugo, F. V.; Manko, V.; Martínez García, G.; Masoni, A.; Mastroserio, A.; Mattiazzo, S.; Miake, Y.; Nath, A.; Nellen, L.; Nowakowski, P.; Oh, S.; Okorokov, V. A.; Paisano-Guzmán, S.; Perciballi, S.; Pisano, S.; Pucillo, S.; Read, K. F.; Riabov, V.; Rodríguez Ramírez, S. A.; Sahoo, R.; Saramela, T. B.; Schambach, J.; Schlepper, F.; Schmier, A. R.; Šerkšnytė, L.; Shahoyan, R.; Shatat, A.; Singh, R.; Singh, S.; Sitta, M.; Soto-hernandez, A. B.; Staa, J.; Steffanic, P. J.; Suaide, A. A. P.; Takahashi, J.; Tang, S.; Tejeda Muñoz, G.; Thakur, S.; Vázquez Doce, O.; Vickovic, L.; Vinogradov, A.; Volpe, G.; von Haller, B.; Wilk, G.; Wu, W.; Zarochentsev, A.
The journal of high energy physics, 02/2024, Volume: 2024, Issue: 2Journal Article
A bstract The transverse momentum ( p T ) and centrality dependence of the nuclear modification factor R AA of prompt and non-prompt J/ ψ , the latter originating from the weak decays of beauty hadrons, have been measured by the ALICE collaboration in Pb–Pb collisions at s NN = 5.02 TeV. The measurements are carried out through the e + e − decay channel at midrapidity (| y | < 0.9) in the transverse momentum region 1.5 < p T < 10 GeV/ c . Both prompt and non-prompt J/ ψ measurements indicate a significant suppression for p T > 5 GeV/ c , which becomes stronger with increasing collision centrality. The results are consistent with similar LHC measurements in the overlapping p T intervals, and cover the kinematic region down to p T = 1.5 GeV/ c at midrapidity, not accessible by other LHC experiments. The suppression of prompt J/ ψ in central and semicentral collisions exhibits a decreasing trend towards lower transverse momentum, described within uncertainties by models implementing J/ ψ production from recombination of c and c ¯ quarks produced independently in different partonic scatterings. At high transverse momentum, transport models including quarkonium dissociation are able to describe the suppression for prompt J/ ψ . For non-prompt J/ ψ , the suppression predicted by models including both collisional and radiative processes for the computation of the beauty-quark energy loss inside the quark-gluon plasma is consistent with measurements within uncertainties.
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