  A new mechanism of baryon-antibaryon production via nonperturbative double
pair creation in intermediate mesons is proposed and the theory contains no
fitting parameters. It is shown, that near-threshold resonances are responsible
for enhancements in electroproduction cross sections: $\psi(4S)$ for
$\Lambda^+_c \Lambda^-_c, \Upsilon (6S)$ for $\Lambda_b \bar \Lambda_b$. An
admixture of intermediate $D$- wave resonances produces angular dependence in
differential cross section and can explain unusual behavior of the ratio
$G_E/G_M$ for the proton.

High Energy Physics - Phenomenology;High Energy Physics - Experiment;Nuclear Theory