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Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC

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

Periodico
PHYSICAL REVIEW LETTERS
Abstract
Local parity-odd domains are theorized to form inside a quark-gluon plasma which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magnetic effect. The experimental observation of charge separation has previously been reported for heavy-ion collisions at the top RHIC energies. In this Letter, we present the results of the beam-energy dependence of the charge correlations in Au+Au collisions at midrapidity for center-of-mass energies of 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV from the STAR experiment. After background subtraction, the signal gradually reduces with decreased beam energy and tends to vanish by 7.7 GeV. This implies the dominance of hadronic interactions over partonic ones at lower collision energies
DOI
10.1103/PhysRevLett.113.052302
WOS
WOS:000339969600004
Archivio
http://hdl.handle.net/11368/2945848
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84905575386
http://harvest.aps.org/bagit/articles/10.1103/PhysRevLett.113.052302/apsxml
Diritti
metadata only access
Soggetti
  • heavy-ion

Scopus© citazioni
165
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
168
Data di acquisizione
Mar 8, 2024
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