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Υ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

Acharya, S.
•
Acosta, F. T.
•
Adamová, D.
altro
Zou, S.
2019
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
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 RΥ(2S)/RΥ(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.
DOI
10.1016/j.physletb.2018.11.067
WOS
WOS:000460118200010
Archivio
http://hdl.handle.net/11368/2936516
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85060196749
https://www.sciencedirect.com/science/article/pii/S0370269318309973
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2936516/1/PLB_790(2019)89-101.pdf
Soggetti
  • Nuclear and High Ener...

Web of Science© citazioni
29
Data di acquisizione
Mar 27, 2024
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