{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.96905.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1081744"}},{"@id":"https://doi.org/10.1103/PhysRevLett.108.202301","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2020","description":"STAR\u2019s measurements of directed flow ($v_1$) around midrapidity for $\\pi^{\\pm}$, $K^{\\pm}$, $K_{S}^{0}$, p and $\\bar{p}$ in $Au + Au$ collisions at $\\sqrt{s_{NN}} = 200$ GeV are presented. A negative $v_1$(y) slope is observed for most of produced particles ($\\pi^{\\pm}$, $K^{\\pm}$, $K_{S}^{0}$ and $\\bar{p}$). In 5-30$\\%$ central collisions a sizable difference is present between the $v_1$(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The $v_1$ excitation function is presented. Comparisons to model calculations (RQMD,UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of $v_1$ for both pions and protons, none of them can describe $v_1$(y) for pions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the $v_1$(y) slopes of protons and antiprotons.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t1","@type":"Dataset","description":"$v_1$ for $\\pi^{\\pm}$, $K^{\\pm}$, $K_{S}^{0}$ (left panel), p and $\\bar{p}$ (right panel) as a function of rapidity for 10-70$\\%$ $Au...","name":"Figure 1 (left)"},{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t2","@type":"Dataset","description":"$v_1$ for $\\pi^{\\pm}$, $K^{\\pm}$, $K_{S}^{0}$ (left panel), p and $\\bar{p}$ (right panel) as a function of rapidity for 10-70$\\%$ $Au...","name":"Figure 1 (left) for $K^{\\pm}$ only"},{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t3","@type":"Dataset","description":"$v_1$ for $\\pi^{\\pm}$, $K^{\\pm}$, $K_{S}^{0}$ (left panel), p and $\\bar{p}$ (right panel) as a function of rapidity for 10-70$\\%$ $Au...","name":"Figure 1 (right)"},{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t4","@type":"Dataset","description":"Model calculations of pion (left panel) and proton (right panel) $v_1$(y) for 10-70$\\%$ $Au + Au$ collisions at $\\sqrt{s_{NN}} =...","name":"Figure 2"},{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t5","@type":"Dataset","description":"Charged pions (solid stars), protons (solid circles) and antiprotons (solid squares) $v_1$(y) slope (d$v_1$/dy) at midrapidity as a function of...","name":"Figure 3"},{"@id":"https://doi.org/10.17182/hepdata.96905.v1/t6","@type":"Dataset","description":"Proton $v_1$($y^{\\prime}$) slope (d$v_1$/d$y^{\\prime}$) at midrapidity as a function of center of mass collision energy, where $y^{\\prime} = y/y_{beam}$.","name":"Figure 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1081744?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/96905"}],"inLanguage":"en","name":"Directed Flow of Identified Particles in Au + Au Collisions at $\\sqrtsNN = 200$ GeV at RHIC","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1081744?version=1","version":1}