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Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN =7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

Adamczyk, L.
•
Adams, J. R.
•
Adkins, J. K.
altro
Zyzak, M.
2018
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We report measurements of the nuclear modification factor RCP for charged hadrons as well as identified π+(-), K+(-), and p(p ̄) for Au+Au collision energies of sNN=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-pT net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton RCP at high pT does depend on the collision energy, neither the proton nor the antiproton RCP at high pT exhibit net suppression at any energy. A study of how the binary collision-scaled high-pT yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.
DOI
10.1103/PhysRevLett.121.032301
WOS
WOS:000439286800003
Archivio
http://hdl.handle.net/11368/2941690
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85050377401
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.032301
Diritti
closed access
license:copyright editore
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2941690
Soggetti
  • jet quenching

  • nuclear modification ...

  • heavy ion

  • STAR

  • RHIC

Web of Science© citazioni
17
Data di acquisizione
Mar 18, 2024
google-scholar
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