2010/09/17 by Roman Pasechnik, Jacques Soffer, Oleg Teryaev · 1 citation
Physics and Astronomy · #Deep inelastic scattering #High-Energy Particle Collisions Research #Inelastic scattering #Lambda #Nuclear physics #Nucleon #Operator product expansion #Particle physics #Particle physics theoretical and experimental studies #Perturbation theory (quantum mechanics) #Perturbative QCD #Physics #Proton #QCD sum rules #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Radiative transfer #Scattering #Sum rule in quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.82.076007
published as Phys.Rev.D82:076007,2010 · 12 pages, 6 figures
arxiv created 2010/09/17 · openalex publication_date 2010/10/21 · arxiv updated 2010/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The generalized Gerasimov-Drell-Hearn sum rule is known to be very sensitive to QCD radiative and power corrections. We improve the previously developed QCD-inspired model for the Q2 dependence of the Gerasimov-Drell-Hearn sum rule. We take into account higher order radiative and higher-twist power corrections extracted from precise Jefferson Lab data on the lowest moment of the spin-dependent proton structure function \ensuremathΓ1p(Q2) and on the Bjorken sum rule \ensuremathΓ1^p\ensuremath-n(Q2). By using the singularity-free analytic perturbation theory we demonstrate that the matching point between chiral-like positive-Q2 expansion and QCD operator product 1/Q2 expansion for the nucleon spin sum rules can be shifted down to rather low Q\ensuremath≃\ensuremathΛQCD leading to a good description of recent proton, neutron, deuteron, and Bjorken sum rule data at all accessible Q2.