Dynamical behavior connection of the gluon distribution and the proton structure function at small $x$

Abstract

We make a critical study of the relationship between the singlet structure function $F_2^S$ and the gluon distribution $G(x,Q^2)$ proposed in the past two decades, which is frequently used to extract the gluon distribution from the proton structure function. We show that a simple relation is not generally valid in the simplest state. We complete this relation by using a Laplace transform method and hard-pomeron behavior at LO and NLO at small $x$. Our study shows that this relation is dependent on the splitting functions and initial conditions at $Q^2=Q_0^2$ and running coupling constant at NLO. The resulting analytic expression allows us to predict the proton structure function with respect to the gluon distributions and to compare the results with H1 data and a QCD analysis fit. Comparisons with other results are made and predictions for the proposed best approach are also provided.

8 pages,5 figures

References in corpus (5)

• Dynamical parton distributions of the nucleon and very small-x physics
• Analytic Expression for the Joint x and Q^2 Dependences of the Structure Functions of Deep Inelastic Scattering
• Evolution of singlet structure functions from DGLAP equation at next-to-next-to-leading order at small-x
• Small x Behavior of Parton Distributions from the Observed Froissart Energy Dependence of the Deep Inelastic Scattering Cross Section
• Method of characteristics and solution of DGLAP evolution equation in leading order (LO) and next to leading order (NLO) at small-x

Cited by in corpus (1)

• Nonlinear corrections on the parameterization methods