Local duality in quantum chromodynamics and exclusive lepton-nucleon processes

A phenomenological dual approach to the baryon resonance production in lepton-nucleon interactions at moderate squared momentum transfer Q2 is proposed. The approach uses sum rules arising in QCD while taking into account the m2/Q2 and Psub(T)sup(2)/Qsup(2) power effects (m is the nucleon mass, Psub(T)sup(2) the root mean square of the transverse quark momentum). The nonperturbative Psub(T)sup(2)/Qsup(2) effects have been taken into account by introducing a new phenomenological scaling variable. Weak and electromagnetic (quasi-) elastic nucleon form factors and form factors of the excitation of Δ++(1232) and charmed baryons Csub(0)sup(+)(2260), C1++(2420) are calculated. The results are in good agreement with experiment