Factorization of Large-x Quark Distributions in a Hadron

Details Factorization of Large-x Quark Distributions in a Hadron Factorization of Large-x Quark Distributions in a Hadron

2004-11-30

arxiv.org/abs/hep-ph/0411382v1

Phys.Lett. B610 (2005) 247-252

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures included

Scientific paper

10.1016/j.physletb.2005.02.019

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.

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