{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.73898.v4","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1385603"}},{"@id":"https://doi.org/10.1016/j.physletb.2015.11.043","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"BESIII Collaboration"},"creator":{"@type":"Organization","name":"BESIII Collaboration"},"datePublished":"2021","description":"In Phys. Lett. B 753, 629-638 (2016) [arXiv:1507.08188] the BESIII collaboration published a cross section measurement of the process $e^+e^-\\to \\pi^+ \\pi^-$ in the energy range between 600 and 900 MeV. In this erratum we report a corrected evaluation of the statistical errors in terms of a fully propagated covariance matrix. The correction also yields a reduced statistical uncertainty for the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, which now reads as $a_\\mu^{\\pi\\pi\\mathrm{, LO}}(600 - 900\\,\\mathrm{MeV}) = (368.2 \\pm 1.5_{\\rm stat} \\pm 3.3_{\\rm syst})\\times 10^{-10}$. The central values of the cross section measurement and of $a_\\mu^{\\pi\\pi\\mathrm{, LO}}$, as well as the systematic uncertainties remain unchanged.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.73898.v4/t1","@type":"Dataset","description":"Bare cross section $\\sigma^\\mathrm{bare}(e^+e^-\\to\\pi^+\\pi^-(\\gamma_\\mathrm{FSR}))$ of the process $e^+e^-\\to\\pi^+\\pi^-$ measured using the initial state radiation method. The data is corrected concerning...","name":"Bare Cross Section"},{"@id":"https://doi.org/10.17182/hepdata.73898.v4/t2","@type":"Dataset","description":"Statistical covariance matrix of the bare cross section $\\sigma^\\mathrm{bare}(e^+e^-\\to\\pi^+\\pi^-(\\gamma_\\mathrm{FSR}))$.","name":"Covariance Matrix of the Bare Cross Section"},{"@id":"https://doi.org/10.17182/hepdata.73898.v4/t3","@type":"Dataset","description":"Pion form factor $|F_\\pi|^2$ measured using the initial state radiation method. The data is corrected concerning vacuum polarization effects.","name":"Pion Form Factor"},{"@id":"https://doi.org/10.17182/hepdata.73898.v4/t4","@type":"Dataset","description":"Statistical covariance matrix of the pion form factor $|F_\\pi|^2$.","name":"Covariance Matrix of the Pion Form Factor"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1385603?version=4"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/73898"}],"inLanguage":"en","name":"Measurement of the $\\mathrm e^+\\mathrm e^-\\rightarrow\\mathrm\\pi^+\\mathrm\\pi^-$ Cross Section between 600 and 900 MeV Using Initial State Radiation","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1385603?version=4","version":4}