Inclusive charged-pion electroproduction

We report measurements of semi-inclusive pion electroproduction from both hydrogen and deuterium targets carried out at the Wilson Synchrotron Laboratory at Cornell University. Measurements were made at the ($W$, $Q^2$) points (2.15 GeV, 1.2 Ge${\mathrm{V}}^2$), (2.15, 4.0), and (3.11, 1.2) with hydrogen and deuterium, and at (2.15, 2.0), (2.67, 3.3), and (3.11, 1.7) with hydrogen only. The invariant virtual-photoproduction cross section for pions scaled by the total cross section is studied as a function of $x^{\prime }$, ${p_T}^2$, $W$, and $Q^2$. The invariant structure function shows no $Q^2$ dependence and a weak $W$ dependence. The ratio of ${\pi }^{+}$ to ${\pi }^{-}$ production is also presented, but a distinction between a universal $\omega$ or $W$ dependence cannot be made.