AsymptoticQ2for Exclusive Processes in Quantum Chromodynamics

It is found that at available $Q^2$ the calculable perturbative contributions to the pion electric form factor $F_{\pi }\left(Q^2\right)$ and the nucleon magnetic form factors $G_M^N\left(Q^2\right)$ are much smaller than the data, which can probably be explained by soft contributions. Both hard and soft effects are estimated from light-cone/infinite-momentum-frame wave functions suggested by quark models, but the main conclusions have a more general validity.