Published December 2004 | Version v1
Journal article Metadata-only

The impact factor for the virtual photon to light vector meson transition

Creators

  • 1. Sobolev Institute of Mathematics, Novosibirsk (Russian Federation)
  • 2. Novosibirsk State University, Novosibirsk (Russian Federation)
  • 3. Budker Institute for Nuclear Physics, Novosibirsk (Russian Federation)
  • 4. Universita della Calabria and Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, Dipartimento di Fisica, Cosenza (Italy)

Description

We evaluate in the next-to-leading approximation the forward impact factor for the virtual photon to light vector meson transition in the case of longitudinal polarization. We find that in the hard kinematic domain, both in the leading and in the next-to-leading approximation, the expression for the impact factor factorizes, up to power suppressed corrections, into the convolution of a perturbatively calculable hard-scattering amplitude and a meson twist-2 distribution amplitude. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s2004-02039-4

Additional details

Identifiers

DOI
10.1140/epjc/s2004-02039-4;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
38
Journal Issue
2
Journal Page Range
p. 195-213
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36024998
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CORRECTIONS; FACTORIZATION; FEYNMAN DIAGRAM; PERTURBATION THEORY; PHOTON-HADRON INTERACTIONS; PHOTOPRODUCTION; QUANTUM CHROMODYNAMICS; SCATTERING AMPLITUDES; SPIN ORIENTATION; VECTOR MESONS
Descriptors DEC
AMPLITUDES; BASIC INTERACTIONS; BOSONS; DIAGRAMS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FIELD THEORIES; HADRONS; INFORMATION; INTERACTIONS; MESONS; ORIENTATION; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; QUANTUM FIELD THEORY