The Pion Form Factor. Where Does It Come From?
高能物理 - 唯象学
2009-09-25 v3
摘要
We discuss the nonleading, ``soft" contribution to the pion form factor at intermediate momentum transfer within operator product expansion approach. We argue, that the corresponding contribution can temporarily {\bf simulate} the leading twist behavior in the extent region of , where Such a mechanism, if it is correct, would be an explanation of the phenomenological success of the dimensional counting rules (which theoretically correspond to the keeping of the asymptotically leading terms only) at available, very modest . The relation with quark model calculation is also discussed.
引用
@article{arxiv.hep-ph/9402280,
title = {The Pion Form Factor. Where Does It Come From?},
author = {A. Zhitnitsky},
journal= {arXiv preprint arXiv:hep-ph/9402280},
year = {2009}
}
备注
LATEX, 10 pgs. The basic, starting point of the entire approach is clarified. All numerical results are the same