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Measurement of nuclear effects on ψ(2S) production in p-Pb collisions at √sNN = 8.16 TeV

Acharya S.
•
Adamova D.
•
Adler A.
altro
Zurlo N.
2020
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
Inclusive ψ(2S) production is measured in p-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN = 8.16 TeV, using the ALICE detector at the CERN LHC. The production of ψ(2S) is studied at forward (2.03 < ycms< 3.53) and backward (−4.46 < ycms< −2.96) centre-of-mass rapidity and for transverse momentum pT< 12 GeV/c via the decay to muon pairs. In this paper, we report the integrated as well as the ycms- and pT-differential inclusive production cross sections. Nuclear effects on ψ(2S) production are studied via the determination of the nuclear modification factor that shows a strong suppression at both forward and backward centre-of-mass rapidities. Comparisons with corresponding results for inclusive J/ψ show a similar suppression for the two states at forward rapidity (p-going direction), but a stronger suppression for ψ(2S) at backward rapidity (Pb-going direction). As a function of pT, no clear dependence of the nuclear modification factor is found. The relative size of nuclear effects on ψ(2S) production compared to J/ψ is also studied via the double ratio of production cross sections [σψ(2S)/σJ/ψ]pPb/[σψ(2S)/σJ/ψ]pp between p-Pb and pp collisions. The results are compared with theoretical models that include various effects related to the initial and final state of the collision system and also with previous measurements at sNN = 5.02 TeV. [Figure not available: see fulltext.]
DOI
10.1007/JHEP07(2020)237
WOS
WOS:000556005800001
Archivio
http://hdl.handle.net/11368/2971864
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85088872477
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2971864/1/JHEP_07(2020)237_1-27.pdf
Soggetti
  • Heavy Ion Experiment

  • Heavy-ion collision

Scopus© citazioni
7
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
10
Data di acquisizione
Mar 14, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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