ϒ suppression at forward rapidity in Pb–Pb collisions at √sNN=5.02TeV
Journal article
Authors | Barnby, Lee, Collaboration, ALICE and S., Acharya |
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Abstract | Inclusive ϒ(1S) and ϒ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN = 5.02 TeV, using the ALICE detector at the CERN LHC. The ϒ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive ϒ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The ϒ(1S) and ϒ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RAAϒ(2S)/RAAϒ(1S) of 0.28±0.12(stat)±0.06(syst). The observed ϒ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity. |
Keywords | quark-gluon plasma; charmonium suppression |
Year | 2018 |
Journal | Physics Letters B |
Journal citation | 790, pp. 89-101 |
Publisher | Elsevier |
ISSN | 03702693 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.physletb.2018.11.067 |
Web address (URL) | http://hdl.handle.net/10545/623656 |
http://creativecommons.org/licenses/by/4.0/ | |
hdl:10545/623656 | |
Publication dates | 12 Nov 2018 |
Publication process dates | |
Deposited | 10 Apr 2019, 13:33 |
Accepted | 10 Mar 2019 |
Rights | © 2018 Published by Elsevier B.V. |
Contributors | STFC Daresbury Laboratory |
File | File Access Level Open |
https://repository.derby.ac.uk/item/9382y/-suppression-at-forward-rapidity-in-pb-pb-collisions-at-snn-5-02tev
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