The Longitudinal Heavy Quark Structure Function F_{L}^{Q\bar{Q}} in the Region Q^2 \gg m^2 at O(α

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189190The logarithmic and constant contributions to the Wilson coefficient of the longitudinal heavy quark structure function to $O(α_s^3)$ are calculated using mass factorization techniques in Mellin space. The small $x$ behaviour of the Wilson coefficient is determined. Numerical illustrations are presented.15 pages, 3 figures, 1 style fileHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentThe Longitudinal Heavy Quark Structure Function F_{L}^{Q\bar{Q}} in the Region Q^2 \gg m^2 at O(α_s^3)text