Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au+Au Collisions at RHIC

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dc.citation.firstpage52302en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber113en_US
dc.contributor.authorSTAR Collaborationen_US
dc.date.accessioned2015-05-15T19:06:39Zen_US
dc.date.available2015-05-15T19:06:39Zen_US
dc.date.issued2014en_US
dc.description.abstractLocal 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 62.4ﾠGeV from the STAR experiment. After background subtraction, the signal gradually reduces with decreased beam energy and tends to vanish by 7.7ﾠGeV. This implies the dominance of hadronic interactions over partonic ones at lower collision energies.en_US
dc.identifier.citationSTAR Collaboration. "Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au+Au Collisions at RHIC." <i>Physical Review Letters,</i> 113, no. 5 (2014) American Physical Society: 52302. http://dx.doi.org/10.1103/PhysRevLett.113.052302.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevLett.113.052302en_US
dc.identifier.urihttps://hdl.handle.net/1911/80239en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleBeam-Energy Dependence of Charge Separation along the Magnetic Field in Au+Au Collisions at RHICen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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