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Measurement of γ(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at √sNN =5.02 TeV

Acharya S.
•
Adamova D.
•
Adhya S. P.
altro
Zurlo N.
2019
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
The first measurement of the Υ(1S) elliptic flow coefficient (v2) is performed at forward rapidity (2.5 < y < 4) in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT ) up to 15 GeV=c in the 5%–60% centrality interval. The measured Υ(1S) v2 is consistent with 0 and with the small positive values predicted by transport models within uncertainties. The v2 coefficient in 2 < pT < 15 GeV=c is lower than that of inclusive J/ψ mesons in the same pT interval by 2.6 standard deviations. These results, combined with earlier suppression measurements, are in agreement with a scenario in which the Υ(1S) production in Pb–Pb collisions at LHC energies is dominated by dissociation limited to the early stage of the collision, whereas in the J=ψ case there is substantial experimental evidence of an additional regeneration component.
DOI
10.1103/PhysRevLett.123.192301
WOS
WOS:000495073200004
Archivio
http://hdl.handle.net/11368/2954411
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85074896931
http://harvest.aps.org/bagit/articles/10.1103/PhysRevLett.123.192301/apsxml
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2954411/1/PRL_123(2019)192301_1-13.pdf
Soggetti
  • LHC

  • ALICE

  • elliptic flow

Scopus© citazioni
31
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
29
Data di acquisizione
Mar 19, 2024
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