Factorization of Large-x Quark Distributions in a Hadron
High Energy Physics - Phenomenology
2010-04-05 v1
Abstract
We present a factorization formula for valence quark distributions in a hadron in x-->1 limit. For the example of pion, we arrive at the form of factorization by analyzing momentum flow in the leading and high-order Feynman diagrams. The result confirms the well-known 1-x scaling rule to all orders in perturbation theory, providing the non-perturbative matrix elements for the infrared-divergence factors. We comment on re-summation of perturbative single and double logarithms in 1-x.
Cite
@article{arxiv.hep-ph/0411382,
title = {Factorization of Large-x Quark Distributions in a Hadron},
author = {Xiangdong Ji and Jian-Ping Ma and Feng Yuan},
journal= {arXiv preprint arXiv:hep-ph/0411382},
year = {2010}
}
Comments
7 pages, 2 figures included