{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.98580.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/647869"}},{"@id":"https://doi.org/10.1103/PhysRevC.70.031902","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"STAR Collaboration"},"creator":{"@type":"Organization","name":"STAR Collaboration"},"datePublished":"2020","description":"We present the first data on $e^{+}e^{\u2212}$ pair production accompanied by nuclear breakup in ultra-peripheral gold-gold collisions at a center of mass energy of 200 GeV per nucleon pair. The nuclear breakup requirement selects events at small impact parameters, where higher-order corrections to the pair production cross section should be enhanced. We compare the pair kinematic distributions with two calculations: one based on the equivalent photon approximation, and the other using lowest-order quantum electrodynamics (QED); the latter includes the photon virtuality. The cross section, pair mass, rapidity and angular distributions are in good agreement with both calculations. The pair transverse momentum, $p_{T}$, spectrum agrees with the QED calculation, but not with the equivalent photon approach. We set limits on higher-order contributions to the cross section. The $e^{+}$ and $e^{\u2212}$ $p_{T}$ spectra are similar, with no evidence for interference effects due to higher-order diagrams.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.98580.v1/t1","@type":"Dataset","description":"(a) The pair mass distribution, (b) pair $p){T}$ , (c) pair rapidity and (d) pair cos($\\theta\u2032$) distributions. The data (points)...","name":"Figure 2 a"},{"@id":"https://doi.org/10.17182/hepdata.98580.v1/t2","@type":"Dataset","description":"(a) The pair mass distribution, (b) pair $p){T}$ , (c) pair rapidity and (d) pair cos($\\theta\u2032$) distributions. The data (points)...","name":"Figure 2 b"},{"@id":"https://doi.org/10.17182/hepdata.98580.v1/t3","@type":"Dataset","description":"(a) The pair mass distribution, (b) pair $p){T}$ , (c) pair rapidity and (d) pair cos($\\theta\u2032$) distributions. The data (points)...","name":"Figure 2 c"},{"@id":"https://doi.org/10.17182/hepdata.98580.v1/t4","@type":"Dataset","description":"(a) The pair mass distribution, (b) pair $p){T}$ , (c) pair rapidity and (d) pair cos($\\theta\u2032$) distributions. The data (points)...","name":"Figure 2 d"},{"@id":"https://doi.org/10.17182/hepdata.98580.v1/t5","@type":"Dataset","description":"The $p_{T}$ spectra of the produced electrons and positrons, along with the comparable EPA and QED calculations. In both calculations,...","name":"Figure 3"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins647869?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/98580"}],"inLanguage":"en","name":"Production of e+ e- pairs accompanied by nuclear dissociation in ultra-peripheral heavy ion collision.","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins647869?version=1","version":1}