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Two-particle differential transverse momentum and number density correlations in p-Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV at the CERN Large Hadron Collider

Acharya S.
•
Adamova D.
•
Adolfsson J.
altro
Zou S.
2019
  • journal article

Periodico
PHYSICAL REVIEW C
Abstract
We present measurements of two-particle differential number correlation functions R2 and transverse momen- tum correlation functions P2, obtained from p-Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV. The results are obtained by using charged particles in the pseudorapidity range |η| < 1.0 and transverse momentum range 0.2 < pT < 2.0 GeV/c as a function of pair separation in pseudorapidity, |η|, azimuthal angle φ, and for several charged-particle multiplicity classes. Measurements are carried out for like-sign and unlike-sign charged-particle pairs separately and combined to obtain charge-independent and charge-dependent correlation functions. We study the evolution of the width of the near-side peak of these correlation functions with collision centrality. Additionally, we study Fourier decompositions of the correlators in φ as a function of pair separation |η|. Significant differences in the dependence of their harmonic coefficients on multiplicity classes are found. These differences can be exploited, in theoretical models, to obtain further insight into charged-particle production and transport in heavy-ion collisions. Moreover, an upper limit of nonflow contributions to flow coefficients vn measured in Pb-Pb collisions based on the relative strength of Fourier coefficients measured in p-Pb interactions is estimated.
DOI
10.1103/PhysRevC.100.044903
WOS
WOS:000489577600005
Archivio
http://hdl.handle.net/11368/2954308
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85073831875
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.100.044903
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2954308/1/PRC_100(2019)044903_1-41.pdf
Soggetti
  • ALICE

  • relativistic heavy io...

  • correlations

Web of Science© citazioni
11
Data di acquisizione
Mar 28, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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