Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861451 | Physics Letters B | 2005 | 6 Pages |
Abstract
We present a factorization formula for valence quark distributions in a hadron in xâ1 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 1âx scaling rule to all orders in perturbation theory, providing the nonperturbative matrix elements for the infrared divergence factors. We comment on resummation of perturbative single and double logarithms in 1âx.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
Authors
Xiangdong Ji, Jian-Ping Ma, Feng Yuan,