scholarly journals Small-x asymptotics of the quark helicity distribution: Analytic results

2017 ◽  
Vol 772 ◽  
pp. 136-140 ◽  
Author(s):  
Yuri V. Kovchegov ◽  
Daniel Pitonyak ◽  
Matthew D. Sievert
Keyword(s):  
Helicity Distribution ◽  
Small X

scholarly journals Small x Asymptotics of the Quark and Gluon Helicity Distributions

2018 ◽  
Vol 172 ◽  
pp. 03006
Author(s):  
Yuri V. Kovchegov ◽  
Daniel Pitonyak ◽  
Matthew D. Sievert
Keyword(s):  
Perturbative Qcd ◽  
Evolution Equations ◽  
Leading Order ◽  
Helicity Distribution ◽  
Small X ◽  
Gluon Helicity

We determine the small-x asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large Nc. To achieve this, we begin by evaluating the dipole gluon helicity TMD at small x. We then construct and solve novel small-x large-Nc evolution equations for the operator related to the dipole gluon helicity TMD. Our main result is the small-x asymptotics for the quark helicity distribution

scholarly journals Gluon Helicity Distribution at Small x

2018 ◽  
Author(s):  
Yuri Kovchegov ◽  
Daniel Pitonyak ◽  
Matthew Sievert
Keyword(s):  
Helicity Distribution ◽  
Small X ◽  
Gluon Helicity

scholarly journals Small-x asymptotics of the gluon helicity distribution

2017 ◽  
Vol 2017 (10) ◽  
Author(s):  
Yuri V. Kovchegov ◽  
Daniel Pitonyak ◽  
Matthew D. Sievert
Keyword(s):  
Helicity Distribution ◽  
Small X ◽  
Gluon Helicity

The Shuvaev Transform and the Skewness Effect at small x

2009 ◽  
Author(s):  
Thomas Teubner ◽  
A.D. Martin ◽  
C. Nockles ◽  
M.G. Ryskin ◽  
A.G. Shuvaev
Keyword(s):  
Small X

Use of a Method of Small X-Ray Line Shifts to Investigate the Electronic Structure of Crystal Chemical Bonds

1974 ◽  
Vol 113 (6) ◽  
pp. 360 ◽  
Author(s):  
O.M. Sumbaev ◽  
E.V. Petrovich ◽  
Yu.P. Smirnov ◽  
I.M. Band ◽  
Aleksandr I. Smirnov
Keyword(s):  
Electronic Structure ◽  
Crystal Chemical ◽  
Chemical Bonds ◽  
X Ray ◽  
Small X

PARTON DISTRIBUTION FUNCTIONS AND THE QCD-IMPROVED PARTON MODEL — AN OVERVIEW

1987 ◽  
Vol 02 (04) ◽  
pp. 1369-1387 ◽  
Author(s):  
Wu-Ki Tung
Keyword(s):  
Parton Distribution ◽  
Particle Production ◽  
Heavy Particle ◽  
Parton Model ◽  
Distribution Functions ◽  
Collider Physics ◽  
Parton Distribution Functions ◽  
Parton Distributions ◽  
First Order ◽  
Small X

Some non-trivial features of the QCD-improved parton model relevant to applications on heavy particle production and semi-hard (small-x) processes of interest to collider physics are reviewed. The underlying ideas are illustrated by a simple example. Limitations of the naive parton formula as well as first order corrections and subtractions to it are dis-cussed in a quantitative way. The behavior of parton distribution functions at small x and for heavy quarks are discussed. Recent work on possible impact of unconventional small-x behavior of the parton distributions on small-x physics at SSC and Tevatron are summarized. The Drell-Yan process is found to be particularly sensitive to the small x dependence of parton distributions. Measurements of this process at the Tevatron can provide powerful constraints on the expected rates of semi-hard processes at the SSC.

scholarly journals Rise of the DIS structure function FL at small x caused by double-logarithmic corrections

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
B. I. Ermolaev ◽  
S. I. Troyan
Keyword(s):  
Structure Function ◽  
Present Calculation ◽  
Synergic Effect ◽  
Logarithmic Approximation ◽  
Logarithmic Corrections ◽  
Small X

Abstract We present calculation of FL in the double-logarithmic approximation (DLA) and demonstrate that the synergic effect of the factor 1/x from the $$ {\alpha}_s^2 $$ α s 2 -order and the steep x-dependence of the totally resummed double logarithmic contributions of higher orders ensures the power-like rise of FL at small x and arbitrary Q2.

scholarly journals Small-x physics in perturbative QCD

1997 ◽  
Vol 286 (3) ◽  
pp. 131-198 ◽  
Author(s):  
L.N. Lipatov
Keyword(s):  
Perturbative Qcd ◽  
Small X

scholarly journals Cronin effect and high- suppression in the nuclear gluon distribution at small x

2004 ◽  
Vol 742 (1-2) ◽  
pp. 182-252 ◽  
Author(s):  
E. Iancu ◽  
K. Itakura ◽  
D.N. Triantafyllopoulos
Keyword(s):  
Gluon Distribution ◽  
Cronin Effect ◽  
Small X ◽  
Nuclear Gluon

Erratum to: “ -Factorization and small-x anomalous dimensions”

2001 ◽  
Vol 607 (1-2) ◽  
pp. 431-432 ◽  
Author(s):  
G. Camici ◽  
M. Ciafaloni
Keyword(s):  
Anomalous Dimensions ◽  
Small X
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