An analysis of the longitudinal structure function at next-to-leading order approximation at small-$x$

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 $x$ and $Q^2$ values. It is observed that the behavior of the longitudinal structure function depends on the fractional momentum carried by gluons at low $x$. The extracted longitudinal structure functions $F_L(x,Q^2)$ 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)].

References in corpus (16)

• LHAPDF6: parton density access in the LHC precision era
• New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC
• Combined Measurement and QCD Analysis of the Inclusive ep Scattering Cross Sections at HERA
• Electron-Ion Collider in China
• Constraints on large-$x$ parton distributions from new weak boson production and deep-inelastic scattering data
• The Longitudinal Structure Function at the Third Order
• Measurement of the Inclusive e{\pm}p Scattering Cross Section at High Inelasticity y and of the Structure Function FL
• Measurement of the Proton Structure Function F_L at Low x
• A Global Fit to Scattering Data with NLL BFKL Resummations
• Measurement of the Longitudinal Proton Structure Function at HERA
• Determination of the Longitudinal Proton Structure Function F_L(x,Q^2) at Low x
• The Quark and Gluon Structure of the Proton
• Extracting the longitudinal structure function FL(x,Q2) at small x from a Froissart-bounded parametrization of F2(x,Q2)
• Analysis of Low-$x$ Gluon Density from the $F_2$ Scaling Violations
• A Variable Flavour Number Scheme for Heavy Quark Production at Small x
• Decoupling of the structure functions in momentum space based on the Laplace transformation

Cited by in corpus (1)

• Longitudinal Structure Function at the Limit $x=Q^2/s$