scholarly journals Unified QCD evolution equations and the dominant behaviour of structure functions at low x

1995 ◽  
Vol 349 (3) ◽  
pp. 357-362 ◽  
Author(s):  
R. Peschanski ◽  
S. Wallon
Keyword(s):  
Evolution Equations ◽  
Structure Functions ◽  
Low X

scholarly journals ON THE SINGULAR BEHAVIOR OF STRUCTURE FUNCTIONS AT LOW x

1994 ◽  
Vol 09 (36) ◽  
pp. 3393-3402 ◽  
Author(s):  
H. NAVELET ◽  
R. PESCHANSKI ◽  
S. WALLON
Keyword(s):  
Structure Function ◽  
Evolution Equations ◽  
Structure Functions ◽  
Saddle Point Method ◽  
Proton Structure Function ◽  
Singular Behavior ◽  
Proton Structure ◽  
Small X ◽  
Model Independent ◽  
Low X

We discuss the phenomenological extraction of the leading j-plane singularity from singlet structure functions Fs estimated at small x. Using a saddle point method we show that [Formula: see text] is a suitable observable for this purpose in the region x≤10−2. As an application, we confront and distinguish in a model-independent way structure function parametrizations coming from two different QCD evolution equations, namely the Lipatov (or BFKL) equation and the Gribov-Lipatov-Altarelli-Parisi (or GLAP) equation. Recent results on the proton structure function F2 at HERA are discussed in this framework.

scholarly journals High-energy operator product expansion at sub-eikonal level

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Giovanni Antonio Chirilli
Keyword(s):  
Operator Product Expansion ◽  
Evolution Equations ◽  
Energy Operator ◽  
High Energy ◽  
Structure Functions ◽  
Distribution Functions ◽  
Impact Factors ◽  
Operator Product ◽  
The Impact ◽  
New Distribution

Abstract The high energy Operator Product Expansion for the product of two electromagnetic currents is extended to the sub-eikonal level in a rigorous way. I calculate the impact factors for polarized and unpolarized structure functions, define new distribution functions, and derive the evolution equations for unpolarized and polarized structure functions in the flavor singlet and non-singlet case.

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).

Low-x evolution equations in Möbius representation

2010 ◽  
Vol 41 (6) ◽  
pp. 935-938 ◽  
Author(s):  
V. S. Fadin ◽  
R. Fiore ◽  
A. V. Grabovsky ◽  
A. Papa
Keyword(s):  
Evolution Equations ◽  
Low X

scholarly journals Quark and gluon distributions and αs from nucleon structure functions at low x

1993 ◽  
Vol 309 (1-2) ◽  
pp. 222-230 ◽  
Author(s):  
M. Arneodo ◽  
A. Arvidson ◽  
B. Badelek ◽  
M. Ballintijn ◽  
G. Baum ◽  
...  
Keyword(s):  
Structure Functions ◽  
Nucleon Structure ◽  
Gluon Distributions ◽  
Low X

t evolutions of structure functions at low-x

1993 ◽  
Vol 304 (3-4) ◽  
pp. 323-328 ◽  
Author(s):  
J.K. Sarma ◽  
B. Das
Keyword(s):  
Structure Functions ◽  
Low X

Properties of the perturbative QCD pomeron and structure functions at low X

1992 ◽  
Vol 29 (1) ◽  
pp. 84-88 ◽  
Author(s):  
R. Kirschner ◽  
L.N. Lipatov ◽  
L. Szymanowski
Keyword(s):  
Perturbative Qcd ◽  
Structure Functions ◽  
Low X ◽  
Qcd Pomeron
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