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Evolution of twist-3 multiparton correlation functions relevant to single transverse-spin asymmetry

2008/11/30 by Zhong-Bo Kang, Jian-Wei Qiu · 111 citations
Mathematics · Physics and Astronomy · #Algorithm #Asymmetry #Correlation #Evolution equation #Factorization #Geometry #High-Energy Particle Collisions Research #Mathematical analysis #Mathematical physics #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Spin (aerodynamics) #Statistical physics #Twist #hep-ph

paper · pdf · doi:10.1103/physrevd.79.016003

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 79(1) (American Physical Society) · 28 pages, 17 figures, new materials and references added

arxiv created 2008/12/03 · openalex publication_date 2009/01/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We construct two sets of twist-3 correlation functions that are responsible for generating the novel single transverse-spin asymmetry in the QCD collinear factorization approach. We derive evolution equations for these universal three-parton correlation functions. We calculate evolution kernels relevant to the gluonic pole contributions to the asymmetry at the order of \ensuremathαs. We find that all evolution kernels are infrared safe as they should be and have a lot in common with the Dokshitzer-Gribov-Lipatov-Alterelli-Parisi evolution kernels of unpolarized parton distributions. By solving the evolution equations, we explicitly demonstrate the factorization scale dependence of these twist-3 correlation functions.

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