Speaker
Description
When electrons strike a proton or nuclear target, there is a regime where electroproduction of the highest momentum pion or rho mesons proceeds by a perturbatively calculable process. The process is not the leading twist fragmentation process but rather a higher twist process that produces kinematically isolated mesons. Our calculations demonstrate, that in conditions that can be expected at JLab, there is a significant and broad kinematic region for the perturbative QCD mechanism of meson production. The application of this semiexclusive data would be to teach us more about parton distribution functions of the target at high Bjorken x and about the meson distribution amplitudes. In addition, there is a connection to generalized parton distribution calculations of exclusive processes in that the perturbative kernel is the same.
