Abstract
An extensive study of the e + e − → p p ¯ BaBar cross section data is presented. Two unexpected outcomes have been found: the modulus of the proton form factor is normalized to one at threshold, i.e.: | G p ( 4 M p 2 ) | = 1 , as a pointlike fermion, and the resummation factor in the Sommerfeld formula is not needed. Other e+e− → baryon-antibaryon cross sections show a similar behavior near threshold.
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