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Inclusive J/ψ production in Xe–Xe collisions at sNN=5.44 TeV
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Inclusive J/ψ production in Xe–Xe collisions at sNN=5.44 TeV

S. Acharya, F.T. Acosta, D. Adamová, J. Adolfsson, M.M. Aggarwal, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, S.U. Ahn, …
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 卷.785, 頁碼.419-428
10/2018
DOI: https://doi.org/10.1016/j.physletb.2018.08.047

摘要

Nuclear and High Energy Physics
Inclusive J/ψ production is studied in Xe–Xe interactions at a centre-of-mass energy per nucleon pair of s <sub>NN</sub> =5.44 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed via its decay into a muon pair, in the centre-of-mass rapidity interval 2.5<y<4 and down to zero transverse momentum. In this Letter, the nuclear modification factors R <sub>AA</sub> for inclusive J/ψ measured in the centrality range 0–90% as well as in the centrality intervals 0–20% and 20–90% are presented. The R <sub>AA</sub> values are compared to previously published results for Pb–Pb collisions at s <sub>NN</sub> =5.02 TeV and to the calculation of a transport model. A good agreement is found between Xe–Xe and Pb–Pb results as well as between data and the model.

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