Charm and longitudinal structure functions with the Kharzeev-Levin-Nardi model

Abstract

We use the Kharzeev-Levin-Nardi model of the low $x$ gluon distributions to fit recent HERA data on charm and longitudinal structure functions. Having checked that this model gives a good description of the data, we use it to predict $F_2^c$ and $F_L$ to be measured in a future electron-ion collider. The results interpolate between those obtained with the de Florian-Sassot and Eskola-Paukkunen-Salgado nuclear gluon distributions. The conclusion of this exercise is that the KLN model, simple as it is, may still be used as an auxiliary tool to make estimates both for heavy ion and electron-ion collisions.

6 pages, 7 figures

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Cited by in corpus (14)

• Investigating entanglement entropy at small-x in DIS off protons and nuclei
• NLO corrections to the hard pomeron behavior of the charm structure functions $F_k^c(k=2,L)$ at low x
• The Ratio of the Charm Structure Functions $F_k^c(k=2,L)$ at Low x in Deep Inelastic Scattering with Respect to the Expansion Method
• Heavy quark production in deep inelastic electron-nucleus scattering
• Analytical solution of the longitudinal structure function $F_L$ in the leading and next-to-leading-order analysis at low x with respect to Laguerre polynomials method
• Nuclear longitudinal structure function in eA processes at the LHeC
• The behavior of the heavy-quarks structure functions at small-$x$
• The improved saturation model in nuclei
• A simple model for the charm structure function of nuclei
• Heavy quarks structure functions $F_2^{q\bar{q}}(x,Q^2)$ and $F_L^{q\bar{q}}(x,Q^2)$ at the NLO approximation
• Longitudinal Structure Function $F_L$ from Charm Structure Function $F_2^c$
• Effects of heavy quarks in the dipole cross section with the KLN model
• Longitudinal Structure Function at the Limit $x=Q^2/s$
• Nonlinear corrections to the nuclear heavy flavor structure functions