Interplay of Spin and Orbital Angular Momentum in the Proton

2008/03/19 by A. W. Thomas · 111 citations
Physics and Astronomy · #Angular momentum #Angular momentum coupling #Black Holes and Theoretical Physics #Lattice (music) #Lattice QCD #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Proton spin crisis #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Spin (aerodynamics) #Total angular momentum quantum number #Valence (chemistry) #hep-ph

paper · pdf · doi:10.1103/physrevlett.101.102003

published in Physical Review Letters 101(10), 102003 (American Physical Society)

arxiv created 2008/03/19 · openalex publication_date 2008/09/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We derive the consequences of the Myhrer-Thomas explanation of the proton spin problem for the distribution of orbital angular momentum on the valence and sea quarks. After QCD evolution, these results are found to be in very good agreement with both recent lattice QCD calculations and the experimental constraints from Hermes and JLab.

Citations

• Longitudinal Double-Spin Asymmetry for Inclusive Jet Production inp→+p→Collisions ats=200 GeV
• Helicity dependent and independent generalized parton distributions of the nucleon in lattice QCD
• Nucleon generalized parton distributions from full lattice QCD
• Axial-Vector Vertex in Spinor Electrodynamics

Cited by

• Low-energy QCD and hadronic structure
• Orbital angular momentum of the proton and intrinsic five-quark Fock states