Measurement of cross-section for e+e--+ near threshold at BESIII
Abstract
The Born cross-sections and effective form factors for process e+e--+ are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total integrated luminosity of 363.9 pb-1 e+e- collision data collected with the BESIII detector at BEPCII. After performing a fit to the Born cross-section of e+e--+, no significant threshold effect is observed.
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