Anomalous Magnetic Moments and Quark Orbital Angular Momentum

Abstract

We derive an inequality for the distribution of quarks with non-zero orbital angular momentum, and thus demonstrate, in a model-independent way, that a non-vanishing anomalous magnetic moment requires both a non-zero size of the target as well as the presence of wave function components with quark orbital angular momentum L_z>0.

arXiv comment8 pages, to appear in Phys.Rev.D

References in corpus (21)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Final-State Interactions and Single-Spin Asymmetries in Semi-Inclusive Deep Inelastic Scattering
• Impact Parameter Dependent Parton Distributions and Off-Forward Parton Distributions for $\zeta \to 0$
• Impact Parameter Space Interpretation for Generalized Parton Distributions
• Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target
• Measurements of the Proton and Deuteron Spin Structure Functions g1 and g2
• Generalized parton distributions in impact parameter space
• Quark Imaging in the Proton Via Quantum Phase-Space Distributions
• Light-Cone Representation of the Spin and Orbital Angular Momentum of Relativistic Composite Systems
• Measurements of the $Q^2$-Dependence of the Proton and Neutron Spin Structure Functions g1p and g1n
• Spin Structure of the Proton from Polarized Inclusive Deep-Inelastic Muon-Proton Scattering
• Measurement of the Proton Spin Structure Function g1p with a Pure Hydrogen Target
• Measurement of the Deuteron Spin Structure Function g_1^d(x) for 1 (GeV/c)^2 < Q^2 < 40 (GeV/c)^2
• Precision Measurement of the Neutron Spin Asymmetries and Spin-dependent Structure Functions in the Valence Quark Region
• Measurement of the Spin Structure of the Deuteron in the DIS Region
• Sivers function in a spectator model with axial-vector diquarks
• Chromodynamic Lensing and Transverse Single Spin Asymmetries
• Sivers Function in the MIT Bag Model
• Wavefunction-Independent Relations between the Nucleon Axial-Coupling g_A and the Nucleon Magnetic Moments
• Scale Dependence of Hadronic Wave Functions and Parton Densities
• Some Inequalities for the Generalized Parton Distribution E(x,0,t)

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• Quark Wigner Distributions and Orbital Angular Momentum
• Electron Ion Collider: The Next QCD Frontier - Understanding the glue that binds us all
• The Spin Structure of the Nucleon
• Introduction to GPDs and TMDs
• Nucleon Tensor Charge from Exclusive ${\pi }^o$ Electroproduction
• Sivers effect in Drell-Yan processes
• Effect of Orbital Angular Momentum on Valence-Quark Helicity Distributions
• Connection between the Sivers function and the anomalous magnetic moment
• Next-to-leading order corrections in exclusive meson production
• Evidence for the Absence of Gluon Orbital Angular Momentum in the Nucleon
• Vector meson production from a polarized nucleon
• Orbital structure of quarks inside the nucleon in the light-cone diquark model
• Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV
• Estimates for parameters and characteristics of the confining SU(3)-gluonic field in π^0-meson from one- and two-photon decays
• Nucleon tomography. What can we do better today than Rutherford 100 years ago?
• Angular momentum of the physical electron
• Transverse Single Spin Asymmetries in Hadronic Interactions: an experimental overview and outlook
• Proton Structure and PHENIX Experiment