{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.101351.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/800796"}},{"@id":"https://doi.org/10.1016/j.physletb.2009.02.037","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2021","description":"We study the beam-energy and system-size dependence of $\\phi$ meson production (using the hadronic decay mode $\\phi \\to K^{+}K^{-}$) by comparing the new results from $Cu+Cu$ collisions and previously reported $Au+Au$ collisions at $\\sqrt{s_{NN}}=62.4$ and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity $(|y| < 0.5)$ for $0.4 < p_{T} < 5$ GeV/$c$. At a given beam energy, the transverse momentum distributions for $\\phi$ mesons are observed to be similar in yield and shape for $Cu+Cu$ and $Au+Au$ colliding systems with similar average numbers of participating nucleons. The $\\phi$ meson yields in nucleus-nucleus collisions, normalized by the average number of participating nucleons, are found to be enhanced relative to those from $p+p$ collisions. The enhancement for $\\phi$ mesons lies between strange hadrons having net strangeness = 1 ($K^{\u2212}$ and $\\bar{\\Lambda}$) and net strangeness = 2 ($\\Xi$). The enhancement for $\\phi$ mesons is observed to be higher at $\\sqrt{s_{NN}}=200$ GeV compared to 62.4 GeV. These observations for the produced $\\phi (s\\bar{s})$ mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t1","@type":"Dataset","description":"Midrapidity $(|y| < 0.5)$ transverse momentum spectra of $\\phi$ mesons for various collision centrality classes for $Cu+Cu$ collisions at $\\sqrt{s_{NN}}=62.4$...","name":"Table 1a"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t2","@type":"Dataset","description":"Midrapidity $(|y| < 0.5)$ transverse momentum spectra of $\\phi$ mesons for various collision centrality classes for $Cu+Cu$ collisions at $\\sqrt{s_{NN}}=62.4$...","name":"Table 1b"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t3","@type":"Dataset","description":"Upper panels. $N_{\\scriptsize{\\mbox{part}}}$ scaled ($R^{N_{\\scriptsize{\\mbox{part}}}}_{AA}$) nuclear modification factors as a function of $p_{T}$ of $\\phi$ mesons for $0-10\\%$ and $20-30\\%$...","name":"Table 2a"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t4","@type":"Dataset","description":"Upper panels. $N_{\\scriptsize{\\mbox{part}}}$ scaled ($R^{N_{\\scriptsize{\\mbox{part}}}}_{AA}$) nuclear modification factors as a function of $p_{T}$ of $\\phi$ mesons for $0-10\\%$ and $20-30\\%$...","name":"Table 2b"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t5","@type":"Dataset","description":"Upper panels. $N_{\\scriptsize{\\mbox{part}}}$ scaled ($R^{N_{\\scriptsize{\\mbox{part}}}}_{AA}$) nuclear modification factors as a function of $p_{T}$ of $\\phi$ mesons for $0-10\\%$ and $20-30\\%$...","name":"Table 2c"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t6","@type":"Dataset","description":"Upper panels. $N_{\\scriptsize{\\mbox{part}}}$ scaled ($R^{N_{\\scriptsize{\\mbox{part}}}}_{AA}$) nuclear modification factors as a function of $p_{T}$ of $\\phi$ mesons for $0-10\\%$ and $20-30\\%$...","name":"Table 2d"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t7","@type":"Dataset","description":"Upper panel. The ratio of the yields of $K^{\u2212}$, $\\phi$, $\\bar{\\Lambda}$ and $\\Xi+\\bar{\\Xi}$ normalized to $N_{\\scriptsize{\\mbox{part}}}$ in nucleus-nucleus collisions to...","name":"Table 3a"},{"@id":"https://doi.org/10.17182/hepdata.101351.v1/t8","@type":"Dataset","description":"Upper panel. The ratio of the yields of $K^{\u2212}$, $\\phi$, $\\bar{\\Lambda}$ and $\\Xi+\\bar{\\Xi}$ normalized to $N_{\\scriptsize{\\mbox{part}}}$ in nucleus-nucleus collisions to...","name":"Table 3b"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins800796?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/101351"}],"inLanguage":"en","name":"Energy and system size dependence of \\phi meson production in Cu+Cu and Au+Au collisions","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins800796?version=1","version":1}