Content area
Abstract
Abstract.
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.
Details
Title
The impact factor for the virtual photonto light vector meson transition
Author
D Yu Ivanov 1 ; Kotsky, M I 2 ; Papa, A 3
1 Sobolev Institute of Mathematics, Novosibirsk, Russia
2 Budker Institute for Nuclear Physics, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
3 Dipartimento di Fisica, Universitá della Calabria and Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, Cosenza, Italy
1 Sobolev Institute of Mathematics, Novosibirsk, Russia
2 Budker Institute for Nuclear Physics, Novosibirsk, Russia; Novosibirsk State University, Novosibirsk, Russia
3 Dipartimento di Fisica, Universitá della Calabria and Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, Cosenza, Italy
Pages
195-213
Publication year
2004
Publication date
Dec 2004
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2334236114
Copyright
The European Physical Journal C - Particles and Fields is a copyright of Springer, (2004). All Rights Reserved.