Next-to-Leading Order Constituent Quark Structure and Hadronic Structure Functions

Abstract

We calculate the partonic structure of a constituent quark in the Next-to-Leading Order framework. The structure of any hadron can be obtained thereafter using a convolution method. Such a procedure is used to generate the structure function of proton and pion in NLO, neglecting certain corrections to ${\Lambda }_{QCD}$. It is shown that while the constituent quark structure is generated purely perturbatively and accounts for the most part of the hadronic structure, there is a few percent contributions coming from the nonperturbative sector in the hadronic structure. This contribution plays the key role in explaining the SU(2) symmetry breaking of the nucleon sea and the observed violation of Gottfried sum rule. These effects are calculated. We obtained an Excellent agreement with the experimental data in a wide range of $x=[10^{-6},1]$ and $Q^2=[0.5,5000]$ $Ge{V}^2$ for the proton structure function. We have also calculated Pion structure and compared it with the existing data. Again, the model calculations agree rather well with the data from experiment.

32 pages,10 figures, Accepted to publish in Phys. Rev. C

References in corpus (2)

• Inclusive Distributions for Hadronic Collisions in the Valon-Recombination Model
• Parton Distributions in the Valon Model

Cited by in corpus (12)

• The Jacobi Polynomials QCD analysis for the polarized structure function
• Next-to-Leading order approximation of polarized valon and parton distributions
• Meson Structure Functions in Valon Model
• The Role of Polarized Valons in the Flavor Symmetry Breaking of Nucleon Sea
• Transversity Distribution Functions in the Valon Model
• Polarized Structure of Nucleon in the Valon Representation
• Valence Quark Polarization In the Nucleon And the Deuteron Data
• Non-Singlet spin structure function in the valon model and low x scaling behavior of $g_1^{NS}$ and $g_1^p$
• Laguerre polynomials method in the valon model
• Gluon Polarization In Nucleon
• Transverse Spin Structure Function g2(x, Q2 ) in the Valon model
• Contribution of Orbital Angular Momentum to the Nucleon Spin