====== TTP03-31 FSR at leading and next-to-leading order in the radiative return at meson factories ====== The impact of final-state radiation (FSR) on the radiative return method for the extraction of the e+e- hadronic cross section is discussed in detail. Possible experimental tests of the model dependence of FSR are proposed for the pi+pi- hadronic final state. The importance of the (pi+pi-photon) final state contribution to the muon anomalous magnetic moment is investigated, and a method based on the radiative return is proposed to extract these contributions from data. |**Henryk Czyz, Agnieszka Grzelinska** | | {{preprints:2003:ttp03-31.pdf|PDF}} {{preprints:2003:ttp03-31.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0310341|arXiv]] | | |