Published 2004
| Version v1
Journal article
Small-x behaviour of the nonsinglet and singlet structure functions g1
Creators
- 1. Ioffe Physico-Technical Institute, St. Petersburg (Russian Federation)
- 2. Department of Physics and INFN, University Rome III, Rome (Italy)
- 3. St.Petarsburg Institute of Nuclear Physics, Gatchina (Russian Federation)
Description
Explicit expressions for the nonsinglet and singlet structure functions g1 at the small-x region are obtained. They include the total resummation of double-logarithmic contributions and accounting for the running QCD coupling effects. It is predicted that asymptotically the singlet g1∼x-Δs, with the intercept Δs=0.86, which is approximately twice larger than the nonsinglet intercept ΔNS=0.4. The impact of the initial quark and gluon densities on the sign of g1 at x<<1 is discussed
Abstract (Russian)
Получены явные выражения для несинглетной и синглетной g1 в области малых x. Они включают полное суммирование дважды логарифмических вкладов и учет эффектов бегущей константы КХД. Предсказывается, что асимптотически синглетная g1∼x-Δs с интерсептом Δs=0.86, примерно вдвое большим несинглетного ΔNS=0.4. Обсуждается влияние начальных кварковых и глюонных плотностей на знак g1 при x<<1Additional details
Publishing Information
- Journal Title
- Fizika Ehlementarnykh Chastits i Atomnogo Yadra
- Journal Volume
- 35
- Journal Issue
- 7
- Journal Page Range
- p. 183-192
- ISSN
- 0367-2026
- CODEN
- FECAAR
Conference
- Title
- High energy spin physics and quantum chromodynamics
- Original Conference Title
- Spinovaya fizika pri vysokikh ehnergiyakh i kvantovaya khromodinamika
- Dates
- 16-20 Sep 2003
- Place
- Dubna (Russian Federation)
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 36060497
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COUPLING CONSTANTS; DEEP INELASTIC SCATTERING; FEYNMAN DIAGRAM; GLUONS; HADRONS; INFRARED DIVERGENCES; QUANTUM CHROMODYNAMICS; QUARKS; STRUCTURE FUNCTIONS
- Descriptors DEC
- BOSONS; DIAGRAMS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; FUNCTIONS; INELASTIC SCATTERING; INFORMATION; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SCATTERING
Optional Information
- Notes
- 11 refs., 3 figs.