Inclusive Pion Electroproduction at LargepT

We report measurements of the inclusive electroproduction reaction $\mathrm{ep}\to e{\pi }^{+}X$ for pions produced at 90° in the virtual-photon-proton center-of-mass system. Data are presented at the ($W,Q^2$) points (2.2 GeV, 1.2 ${\mathrm{GeV}}^2$), (2.2,3.6), (2.65,1.2), (2.65,2.0), (2.65,2.8), (2.65, 3.6), (3.1, 1.2), and (3.1, 2.0). The invariant structure function is studied as a function of $W$, $Q^2$, $x_T$, $p_T^{}{}_{}{}^2$, and the square of the invariant undetected mass.