First measurement of unpolarized SIDIS cross section and cross section ratios from a ${}^3$He target

The unpolarized semi-inclusive deep-inelastic scattering (SIDIS) differential cross sections in ${}^3$He($e,e^{\mathrm{\prime }}{\pi }^{\pm }$)$X$ have been measured for the first time in Jefferson Lab experiment E06-010 performed with a $5.9$GeV $e^{-}$ beam on a ${}^3$He target. The experiment focuses on the valence quark region, covering a kinematic range $0.12<x_{bj}<0.45$, $1 < Q^2 < 4 , $\text{(GeV/c)}$^2$,$0.45 < z_{h} < 0.65$,and$0.05 < P_t < 0.55 , $\text{GeV/c}$$\mathrm{.}TheextractedSIDISdifferentialcrosssectionsof$\pi^{\pm}$productionarecomparedwithexistingphenomenologicalmodelswhilethe$^3$He nucleus approximated as two protons and one neutron in a plane wave picture, in multi-dimensional bins. Within the experimental uncertainties, the azimuthal modulations of the cross sections are found to be consistent with zero.