ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

Oskari Saarimäki, ALICE Collaboration

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

The production of ϒ mesons in Pb–Pb collisions at a centre-of-mass energy per nucleon pair s NN=5.02 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5<y<4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the ϒ(1S) meson is suppressed by a factor of about three with respect to the production in proton–proton collisions. For the first time, a significant signal for the ϒ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2–3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations.

Original languageEnglish
Article number136579
JournalPhysics Letters B
Volume822
DOIs
Publication statusPublished - 10 Nov 2021
MoE publication typeA1 Journal article-refereed

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