{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.96533.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1107625"}},{"@id":"https://doi.org/10.1103/PhysRevLett.109.152301","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"PHENIX Collaboration"},"creator":{"@type":"Organization","name":"PHENIX Collaboration"},"datePublished":"2020","description":"BNL-RHIC.  Neutral-pion, $\\pi^0$, spectra were measured at midrapidity ($|y| < 0.35$) in Au+Au collisions at $\\sqrt{sNN}=$ 39 and 62.4 GeV and compared to earlier measurements at 200 GeV in the $1 < p_T < 10$ GeV/c transverse-momentum ($p_T$) range. The high-$p_T$ tail is well described by a power law in all cases and the powers decrease significantly with decreasing center-of-mass energy. The change of powers is very similar to that observed in the corresponding p+p-collision spectra. The nuclear-modification factors (RAA) show significant suppression and a distinct energy dependence at moderate $p_T$ in central collisions. At high $p_T$, RAA is similar for 62.4 and 200 GeV at all centralities. Perturbative-quantumchromodynamics calculations that describe RAA well at 200 GeV, fail to describe the 39 GeV data, raising the possibility that the relative importance of initial-state effects and soft processes increases at lower energies. A conclusion that the region where hard processes are dominant is reached only at higher $p_T$, is also supported by the $x_T$ dependence of the $x_T$-scaling power-law exponent.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t1","@type":"Dataset","description":"INVARIANT YIELDS","name":"fig1a1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t2","@type":"Dataset","description":"INVARIANT YIELDS","name":"fig1a2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t3","@type":"Dataset","description":"INVARIANT YIELDS","name":"fig1b1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t4","@type":"Dataset","description":"INVARIANT YIELDS","name":"fig1b2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t5","@type":"Dataset","description":"RAA","name":"fig2a1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t6","@type":"Dataset","description":"RAA","name":"fig2a2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t7","@type":"Dataset","description":"RAA","name":"fig2b1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t8","@type":"Dataset","description":"RAA","name":"fig2b2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t9","@type":"Dataset","description":"pT AVERAGE RAA","name":"fig3"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t10","@type":"Dataset","description":"Sloss","name":"fig4a1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t11","@type":"Dataset","description":"Sloss","name":"fig4a2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t12","@type":"Dataset","description":"Sloss","name":"fig4a3"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t13","@type":"Dataset","description":"n_eff(xT)","name":"fig4b1"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t14","@type":"Dataset","description":"n_eff(xT)","name":"fig4b2"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t15","@type":"Dataset","description":"n_eff(xT)","name":"fig4b3"},{"@id":"https://doi.org/10.17182/hepdata.96533.v1/t16","@type":"Dataset","description":"n_eff(xT)","name":"fig4b4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1107625?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/96533"}],"inLanguage":"en","name":"Evolution of pi^0 suppression in Au+Au collisions from sqrt(s_NN) = 39 to 200 GeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1107625?version=1","version":1}