Singlet structure function g_1 at small x and small Q^2
高能物理 - 唯象学
2008-11-26 v3
摘要
Explicit expressions for the singlet g_1 at small x and small Q^2 are obtained with the total resummation of the leading logarithmic contributions. It is shown that g_1 practically does not depend on Q^2 in this kinematic region. In contrast, it would be interesting to investigate its dependence on the invariant energy 2pq because, being g_1 positive at small 2pq, it can turn negative at greater values of this variable. The position of the turning point is sensitive to the ratio between the initial quark and gluon densities, so its experimental detection would enable to estimate this ratio
关键词
引用
@article{arxiv.hep-ph/0605133,
title = {Singlet structure function g_1 at small x and small Q^2},
author = {B. I. Ermolaev and M. Greco and S. I. Troyan},
journal= {arXiv preprint arXiv:hep-ph/0605133},
year = {2008}
}
备注
Section 2 is totally changed, one more ref added