{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.72237.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1358666"}},{"@id":"https://doi.org/10.1103/PhysRevLett.114.252302","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2016","description":"BNL-RHIC.  We present measurements of $\\pi^-$ and $\\pi^+$ elliptic flow, $v_2$, at midrapidity in Au+Au collisions at $\\sqrt{s_{_{\\rm NN}}} =$ 200, 62.4, 39, 27, 19.6, 11.5 and 7.7 GeV, as a function of event-by-event charge asymmetry, $A_{ch}$, based on data from the STAR experiment at RHIC. We find that $\\pi^-$ ($\\pi^+$) elliptic flow linearly increases (decreases) with charge asymmetry for most centrality bins at $\\sqrt{s_{_{\\rm NN}}} = \\text{27 GeV}$ and higher. At $\\sqrt{s_{_{\\rm NN}}} = \\text{200 GeV}$, the slope of the difference of $v_2$ between $\\pi^-$ and $\\pi^+$ as a function of $A_{ch}$ exhibits a centrality dependence, which is qualitatively similar to calculations that incorporate a chiral magnetic wave effect. Similar centrality dependence is also observed at lower energies.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t1","@type":"Dataset","description":"The distribution of observed charge asymmetry from STAR data.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t2","@type":"Dataset","description":"Pion $v_2${2} as a function of observed charge asymmetry.","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t3","@type":"Dataset","description":"$v_2$ difference between $\\pi^-$ and $\\pi^+$ as a function of charge asymmetry with the tracking efficiency correction, for 30-40% central...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t4","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 200 GeV.","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t5","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 62.4 GeV.","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t6","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 39 GeV.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t7","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 27 GeV.","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t8","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 19.6 GeV.","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t9","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 11.5 GeV.","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.72237.v1/t10","@type":"Dataset","description":"The slope parameter r as a function of centrality for collision energy of 7.7 GeV.","name":"Table 10"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1358666?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/72237"}],"inLanguage":"en","name":"Observation of charge asymmetry dependence of pion elliptic flow and the possible chiral magnetic wave in heavy-ion collisions","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1358666?version=1","version":1}