{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.96561.v2","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1127262"}},{"@id":"https://doi.org/10.1103/PhysRevC.87.034911","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"PHENIX Collaboration"},"creator":{"@type":"Organization","name":"PHENIX Collaboration"},"datePublished":"2020","description":"BNL-RHIC.  The PHENIX experiment has measured the production of neutral pions in Au+Au collisions at $\\sqrt{s_{NN}}$=200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, $p_T$, to 20 GeV/c. The production ratio of $\\eta/\\pi^0$ is 0.46$\\pm$0.01(stat)$\\pm$0.05(syst), constant with $p_T$ and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p+p and d+Au values. The production of $\\pi^0$ is suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor, $R_{AA}$, vs $p_T$, with a slope of 0.0106$^(+0.0034)_(-0.0029)[GeV/c]^-1$, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing $p_T$. To study the path length dependence of suppression, the $\\pi^0$ yield was measured at different angles with respect to the event plane; a strong azimuthal dependence of the $\\pi^0 R_{AA}$ is observed. The data are compared to theoretical models of parton energy loss as a function of the path length, L, in the medium. Models based on pQCD are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and AdS/CFT for the soft interactions is consistent with the data.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t1","@type":"Dataset","description":"Invariant yields of neutral pions, all centralities","name":"Figure 5"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t2","@type":"Dataset","description":"$\\Eta/ \\pi^0 ratios","name":"Figure 8"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t3","@type":"Dataset","description":"$\\pi^0$ nuclear modification factors","name":"Figure 11"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t4","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 0^{\\circ}-15^{\\circ}$","name":"Figure 20-1"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t5","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 15^{\\circ}-30^{\\circ}$","name":"Figure 20-2"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t6","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 30^{\\circ}-45^{\\circ}$","name":"Figure 20-3"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t7","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 45^{\\circ}-60^{\\circ}$","name":"Figure 20-4"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t8","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 60^{\\circ}-75^{\\circ}$","name":"Figure 20-5"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t9","@type":"Dataset","description":"$pi^0$ nuclear modification factors vs reaction plane, $\\Delta \\phi = 75^{\\circ}-90^{\\circ}$","name":"Figure 20-6"},{"@id":"https://doi.org/10.17182/hepdata.96561.v2/t10","@type":"Dataset","description":"Centrality dependence of $p_T$ ingetrated $R_{AA}(\\Delta \\phi)$","name":"Figure 21"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1127262?version=2"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/96561"}],"inLanguage":"en","name":"Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at sqrt(s_NN)=200 GeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1127262?version=2","version":2}