1999/02/23 by J. Kwieciǹski, J. Kwiecinski, Beata Ziaja +1 · 1 citation
Physics and Astronomy · #Algorithm #Atomic physics #Computer science #Excited state #Gluon #HERA #High-Energy Particle Collisions Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Singlet state #Structure function #hep-ph
paper · pdf · doi:10.1103/physrevd.60.054004
published as Phys.Rev.D60:054004,1999 · 24 pages, latex, 7 figures
arxiv created 1999/02/23 · openalex publication_date 1999/07/22 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The structure function g1(x,Q2) is analyzed within the formalism based on unintegrated spin-dependent parton distributions incorporating the LO Altarelli-Parisi evolution and the double ln2(1/x) resummation at low x. We quantitatively examine the possible role of the latter for the small x behavior of the structure functions g1 of the nucleon within the region which may be relevant for the possible polarized DESY HERA measurements. We show that while the nonsinglet structure function is dominated at low x by ladder diagrams the contribution of the nonladder bremsstrahlung terms is important for the singlet structure function. Predictions for the polarized gluon distribution \ensuremathΔG(x,Q2) at low x are also given.