Regge behaviour of structure functions and evolution of gluon structure function upto next-to-leading order at low-x

2011 ◽  
Vol 85 (1) ◽  
pp. 141-147 ◽  
Author(s):  
U. Jamil ◽  
J. K. Sarma
Keyword(s):  
Structure Function ◽  
Structure Functions ◽  
Regge Behaviour ◽  
Leading Order ◽  
Low X

scholarly journals STRUCTURE FUNCTIONS IN DEEP INELASTIC LEPTON-NUCLEON SCATTERING

2000 ◽  
Vol 15 (supp01b) ◽  
pp. 467-494 ◽  
Author(s):  
MAX KLEIN
Keyword(s):  
Inelastic Scattering ◽  
Structure Function ◽  
Deep Inelastic Scattering ◽  
Gluon Distribution ◽  
Structure Functions ◽  
Heavy Flavor ◽  
Nucleon Scattering ◽  
High Q ◽  
Low X

This report presents the latest results on structure functions, as available at the Lepton-Photon Symposium 1999. It focuses on three experimental areas: new structure function measurements, in particular from HERA at low x and high Q2; results on light and heavy flavor densities; and determinations of the gluon distribution and of αs. As the talk was delivered at a historic moment and place, a few remarks were added recalling the exciting past and looking into the promising future of deep inelastic scattering (DIS).

scholarly journals HARD-POMERON BEHAVIOR OF THE LONGITUDINAL STRUCTURE FUNCTION FL IN THE NEXT-TO-LEADING ORDER AT LOW x

2009 ◽  
Vol 18 (01) ◽  
pp. 131-140 ◽  
Author(s):  
G. R. BOROUN
Keyword(s):  
Perturbation Theory ◽  
Structure Function ◽  
Perturbative Qcd ◽  
Gluon Distribution ◽  
Analytic Formula ◽  
Leading Order ◽  
Longitudinal Structure ◽  
Longitudinal Structure Function ◽  
Low X

We present an analytic formula to extract the longitudinal structure function in the next-to-leading order of the perturbation theory at low x, from the Regge-like behavior of the gluon distribution and the structure function at this limit. In this approach, the longitudinal structure function has the hard-Pomeron behavior. The determined values are compared with the H1 data and MRST model. All results can consistently be described within the framework of perturbative QCD, which essentially show increases as x decreases.

COMPARISON OF PARTON DISTRIBUTIONS AND STRUCTURE FUNCTIONS FOR THE PROTON

1991 ◽  
Vol 06 (15) ◽  
pp. 1361-1372 ◽  
Author(s):  
H. ABRAMOWICZ ◽  
K. CHARCHULA ◽  
M. KRAWCZYK ◽  
A. LEVY
Keyword(s):  
Comparative Study ◽  
Structure Function ◽  
Structure Functions ◽  
Kinematical Region ◽  
Wide Spread ◽  
Parton Distributions ◽  
Region 10 ◽  
Low X ◽  
The Individual

A comparative study of the most popular parton parametrizations is presented. The individual parton distributions as well as the F2 structure function are discussed with a particular emphasis on the low x region, 10−4<x<10−2. The predictions of these parametrizations for the F2 structure function have a wide spread which persists also in the HERA kinematical region.

scholarly journals A phenomenological solution small x to the longitudinal structure function dynamical behavior

2014 ◽  
Vol 29 (32) ◽  
pp. 1450189 ◽  
Author(s):  
G. R. Boroun ◽  
B. Rezaei ◽  
J. K. Sarma
Keyword(s):  
Structure Function ◽  
Dynamical Behavior ◽  
Structure Functions ◽  
Proton Structure Function ◽  
Leading Order ◽  
Longitudinal Structure ◽  
Proton Structure ◽  
Longitudinal Structure Function ◽  
Color Dipole ◽  
Small X

In this paper, the evolutions of longitudinal proton structure function have been obtained at small x up to next-to-next-to-leading order using a hard Pomeron behavior. In our paper, evolutions of gluonic as well as heavy longitudinal structure functions have been obtained separately and the total contributions have been calculated. The total longitudinal structure functions have been compared with results of Donnachie–Landshoff (DL) model, Color Dipole (CD) model, kT factorization and H1 data.

scholarly journals MASS EFFECTS ON THE NUCLEON SEA STRUCTURE FUNCTIONS

2001 ◽  
Vol 16 (07) ◽  
pp. 467-475 ◽  
Author(s):  
SUN MYONG KIM
Keyword(s):  
Structure Function ◽  
Strange Quark ◽  
Quark Distribution ◽  
Structure Functions ◽  
Distribution Functions ◽  
Charm Quarks ◽  
Evolution Of Structure ◽  
Low X ◽  
Base Structure ◽  
Massive Gluon

Nucleon sea structure functions are studied using Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) equations with the massive gluon–quark splitting kernels for strange and charm quarks, the massless gluon–quark splitting kernels for up and down quarks, and the massless kernels for all other splitting parts. The SU (2)f flavor symmetry for two light quarks, "up" and "down", is assumed. Glück–Reya–Vogt (GRV) and Martin–Roberts–Stirling (MRS) sets are chosen to be the base structure functions at [Formula: see text]. We evolve the sea structure functions from [Formula: see text] to Q2= 50 GeV 2 using the base structure function sets and DGLAP equations. Some (about 10%) enhancement is found in the strange quark distribution functions at low x (<0.1) in leading order of the DGLAP equations compared to results directly from those structure function sets at the value of Q2=50 GeV 2. We provide the value of κ and also show the behavior of [Formula: see text] after the evolution of structure functions.

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