7 papers · 1 filter
Simple model for QCD analysis of the proton helicity structure
Ali N. Khorramian, S. Atashbar Tehrani
In this paper we use the experimental data to obtain the polarized parton distribution functions (PPDFs) in the LO and NLO approximations. The analysis is based on the Jacobi polyn…
QCD Analysis for Nuclear Parton Distributions in the Next to Leading Order
S. Atashbar Tehrani, Ali N. Khorramian
A QCD analysis of the nuclear parton distributions and structure functions in the NLO is performed by using the world data. By having bounded parton distributions for a nuclear wit…
Polarized parton distribution functions in the valon model framework, using QCD fits to Bernstein polynomials
Ali N. Khorramian, A. Mirjalili, S. Atashbar Tehrani
In this paper polarized valon distribution is derived from unpolarized valon distribution. In driving polarized valon distribution some unknown parameters exist which must be deter…
Polarized Parton Distributions in the Valon Model
S. Atashbar Tehrani, Ali N. Khorramian
We calculated the polarized parton distributions in leading order approximation in QCD from valon model. Polarized structure function of the nucleon are analyzed in the polarized v…
Basic Structure in Hadrons
Firooz Arash, Ali N. Khorramian
We have calculated the Structure function a constituent quark in the NLO and from it we have derived the structure functions of hadrons. We found that perturbative generation of ha…
From Constituent Quark to Hadron Structure in the Next-to-Leading Order: Nucleon and Pion
Firooz Arash, Ali Naghi Khorramian
We calculate the partonic structure of constituent quark in the Next-to-Leading Order for the first time. The structure of any hadron can be obtained thereafter using a convolution…