An analysis of the longitudinal structure function at next-to-leading order approximation at small-$x$
High Energy Physics - Phenomenology
2025-04-04 v1
Abstract
The longitudinal structure function is considered at the next-to-leading order approximation using the expansion method, as defined by M.B.Gay Ducati and P.B.Goncalves [Phys.Lett.B {\bf390}, 401 (1997)] and further developed by Jingxuan Chen et al., [Chin.Phys.C {\bf48}, 063104 (2024)]. This method provides results for a wide range of and values. It is observed that the behavior of the longitudinal structure function depends on the fractional momentum carried by gluons at low . The extracted longitudinal structure functions are in line with data from the H1 Collaboration [V. Andreev et al. (H1 Collaboration), Eur. Phys. J. C 74, 2814 (2014)] and the CT18 parametrization method [T.-J. Hou et al., Phys. Rev. D 103, 014013 (2021)].
Cite
@article{arxiv.2412.08115,
title = {An analysis of the longitudinal structure function at next-to-leading order approximation at small-$x$},
author = {G. R. Boroun and Yanbing Cai},
journal= {arXiv preprint arXiv:2412.08115},
year = {2025}
}