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Beam-energy dependence of the directed flow of protons, antiprotons, and pions in au+au collisions

Adamczyk L.
•
Adkins J. K.
•
Agakishiev G.
altro
Zyzak M.
2014
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
Rapidity-odd directed flow (v1) measurements for charged pions, protons, and antiprotons near midrapidity (y=0) are reported in sNN=7.7, 11.5, 19.6, 27, 39, 62.4, and 200 GeV Au+Au collisions as recorded by the STAR detector at the Relativistic Heavy Ion Collider. At intermediate impact parameters, the proton and net-proton slope parameter dv1/dy|y=0 shows a minimum between 11.5 and 19.6 GeV. In addition, the net-proton dv1/dy|y=0 changes sign twice between 7.7 and 39 GeV. The proton and net-proton results qualitatively resemble predictions of a hydrodynamic model with a first-order phase transition from hadronic matter to deconfined matter, and differ from hadronic transport calculations.
DOI
10.1103/PhysRevLett.112.162301
WOS
WOS:000335325900003
Archivio
http://hdl.handle.net/11368/2946257
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84899510179
http://harvest.aps.org/bagit/articles/10.1103/PhysRevLett.112.162301/apsxml
Diritti
closed access
license:copyright editore
FVG url
https://arts.units.it/request-item?handle=11368/2946257
Soggetti
  • heavy-ion

  • flow

  • beam energy scan

Web of Science© citazioni
185
Data di acquisizione
Mar 28, 2024
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