{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.101342.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/919778"}},{"@id":"https://doi.org/10.1103/PhysRevC.85.014910","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2021","description":"Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent $\\rho^0$ photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent $\\rho^0$ photoproduction with nuclear breakup is $10.5\\pm1.5\\pm 1.6$ mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is $2.8\\pm0.6$, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed $15\\pm 55$% increase between 130 GeV and 200 GeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.101342.v1/t1","@type":"Dataset","description":"Acceptance corrected invariant mass distributions for the coherently produced $\\rho^0$ candidates collected with trigger A (left) and B (right). The...","name":"Figure 1 (left)"},{"@id":"https://doi.org/10.17182/hepdata.101342.v1/t2","@type":"Dataset","description":"Acceptance corrected invariant mass distributions for the coherently produced $\\rho^0$ candidates collected with trigger A (left) and B (right). The...","name":"Figure 1 (right)"},{"@id":"https://doi.org/10.17182/hepdata.101342.v1/t3","@type":"Dataset","description":"Transverse momentum distribution of the $\\rho^0$ candidates (open distribution) overlaid by the combinatorial background estimated with like-sign pairs (not corrected...","name":"Figure 2"},{"@id":"https://doi.org/10.17182/hepdata.101342.v1/t4","@type":"Dataset","description":"$\\rho^0$ production cross section determined with the data set collected with trigger B, as a function of momentum transfer $t$,...","name":"Figure 3"},{"@id":"https://doi.org/10.17182/hepdata.101342.v1/t5","@type":"Dataset","description":"Comparison of theoretical predictions to the measured total cross section for coherent $\\rho^0$ production as a functionof $\\sqrt{s_{NN}}$ . The...","name":"Figure 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins919778?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/101342"}],"inLanguage":"en","name":"$\\rho^{0}$ Photoproduction in AuAu Collisions at $\\sqrt{s_{NN}}$=62.4 GeV with STAR","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins919778?version=1","version":1}