Published December 1992 | Version v1
Journal article Metadata-only

Higher order QCD corrections to the photoproduction of a direct photon at HERA

Creators

  • 1. ENSLAPP, 74 - Annecy-le-Vieux (France). Lab. de Physique Theorique
  • 2. Aix-Marseille-2 Univ., 13 - Marseille (France). Centre de Physique Theorique
  • 3. Paris-11 Univ., 91 - Orsay (France). Lab. de Physique Theorique et Hautes Energies

Description

The contribution of resolved photons to the photoproduction cross section of direct photons is reexamined. Higher order, O(α2αs), QCD corrections to this contribution are calculated and turn out to be important at HERA energies. The observation of direct photons in the medium-pperpendicularto range (pperpendicularto ∝ 5 GeV/c) should provide the opportunity to measure the gluon content of the photon. (orig.)

Additional details

Publishing Information

Journal Title
Zeitschrift fuer Physik. C
Journal Volume
56
Journal Issue
4
Journal Page Range
p. 589-599.
ISSN
0170-9739
CODEN
ZPCFD2

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
24008506
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BORN APPROXIMATION; BREMSSTRAHLUNG; CORRECTIONS; DIFFERENTIAL CROSS SECTIONS; FEYNMAN DIAGRAM; GAMMA SPECTRA; GEV RANGE 100-1000; GLUON MODEL; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; LADDER APPROXIMATION; PARTICLE RAPIDITY; PARTICLE STRUCTURE; PARTON MODEL; PERTURBATION THEORY; PHOTON-PROTON INTERACTIONS; PHOTONS; QUANTUM CHROMODYNAMICS; QUANTUM ELECTRODYNAMICS; THEORETICAL DATA; TRANSVERSE MOMENTUM
Descriptors DEC
BASIC INTERACTIONS; BOSONS; COMPOSITE MODELS; CROSS SECTIONS; DATA; DIAGRAMS; ELECTRODYNAMICS; ELECTROMAGNETIC INTERACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; INFORMATION; INTERACTIONS; LINEAR MOMENTUM; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; QUANTUM FIELD THEORY; RADIATIONS; SPECTRA