Electroproduction of two light vector mesons in next-to-leading BFKL: study of systematic effects
Abstract
The forward electroproduction of two light vector mesons is the first example of a collision process between strongly interacting colorless particles for which the amplitude can be written completely within perturbative QCD in the Regge limit with next-to-leading accuracy. In a previous paper we have given a numerical determination of the amplitude in the case of equal photon virtualities by using a definite representation for the amplitude and a definite optimization method for the perturbative series. Here we estimate the systematic uncertainty of our previous determination, by considering a different representation of the amplitude and different optimization methods of the perturbative series. Moreover, we compare our result for the differential cross section at the minimum momentum transfer with a different approach, based on collinear kernel improvement.
Cite
@article{arxiv.hep-ph/0610042,
title = {Electroproduction of two light vector mesons in next-to-leading BFKL: study of systematic effects},
author = {D. Yu. Ivanov and A. Papa},
journal= {arXiv preprint arXiv:hep-ph/0610042},
year = {2008}
}
Comments
17 pages, 11 figures; journal version, new figures and discussion added