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arXiv · hep-ph/0404183

QCD Factorization for Semi-Inclusive Deep-Inelastic Scattering at Low Transverse Momentum

Xiangdong Ji·Jian-ping Ma·Feng Yuan
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Abstract

We demonstrate a factorization formula for semi-inclusive deep-inelastic scattering with hadrons in the current fragmentation region detected at low transverse momentum. To facilitate the factorization, we introduce the transverse-momentum dependent parton distributions and fragmentation functions with gauge links slightly off the light-cone, and with soft-gluon radiations subtracted. We verify the factorization to one-loop order in perturbative quantum chromodynamics and argue that it is valid to all orders in perturbation theory.

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Xiangdong Ji, Jian-ping Ma, Feng Yuan. 2004-04-21. QCD Factorization for Semi-Inclusive Deep-Inelastic Scattering at Low Transverse Momentum. https://doi.org/10.1103/physrevd.71.034005

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