Direct determination of the structure functions $F_L$, $F_S$ and $G$ from $F_2$ and $d{F}_2/d{Q}^2$ to $O(\hat{I}{\pm }_s^2)$

G. R. Boroun, Loyal Durand, Phuoc Ha

We extend the results of Lappi {\em et al.}, Eur.~Phys.~J.~C {\bf 84}, 84 (2024), to show that it is possible to obtain expressions for the longitudinal, singlet and gluon structur…