Prediction for unintegrated parton distributions

2009/03/31 by Jianhong Ruan, Wei Zhu
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevc.80.045209

published as Phys.Rev.C80:045209,2009 · Review article, 50 pages, 19 figures. To appear in Physical Review C

arxiv created 2009/10/13 · openalex publication_date 2009/10/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Unintegrated parton distributions in the proton and nucleus are predicted by a modified Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equation incorporating the shadowing corrections, which include exact energy-momentum conservation in each splitting and fusion vertices. We find that the nuclear shadowing effects are obvious, although they are far from the saturation limit. On the other hand, we point out that the suppression of the unintegrated gluon distribution toward lower k_t² may arise from the valence-like input rather than the saturation effects.

Citations

• The BFKL equation from the Wilson renormalization group
• Manifestations of high density QCD in the first RHIC data
• Parton transverse momenta and direct photon production in hadronic collisions at high energies
• The unintegrated gluon distribution from the modified BK equation