Generalized parton distributions and transverse densities in a light-front quark-diquark model for the nucleons

Abstract

We present a study of the generalized parton distributions for the quarks in a proton in both momentum and position spaces using the light-front wave functions of a quark-diquark model for the nucleon predicted by the soft-wall model of AdS/QCD. The results are compared with the soft-wall AdS/QCD model of proton GPDs for zero skewness. We also calculate the GPDs for nonzero skewness. We observe that the GPDs have a diffraction pattern in longitudinal position space, as seen before in other models. Then we present a comparitive study of the nucleon charge and anomalous magnetization densities in the transverse plane. Flavor decompositions of the form factors and transverse densities are also discussed.

19 figures; text modified

References in corpus (60)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Generalized Parton Distributions
• Deeply Virtual Compton Scattering
• Unraveling hadron structure with generalized parton distributions
• Hard Exclusive Reactions and the Structure of Hadrons
• Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
• Impact Parameter Space Interpretation for Generalized Parton Distributions
• Hadronic Spectra and Light-Front Wavefunctions in Holographic QCD
• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Hadronic Spectrum of a Holographic Dual of QCD
• Proton elastic form factor ratios to $Q^2$ = 3.5 GeV${}^2$ by polarization transfer
• Light-Cone Representation of the Spin and Orbital Angular Momentum of Relativistic Composite Systems
• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Charge Density of the Neutron
• Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2
• Light-Cone Wavefunction Representation of Deeply Virtual Compton Scattering
• A new parameterization of the nucleon elastic form factors
• The role of the quark and gluon GPDs in hard vector-meson electroproduction
• Generalized parton distributions from nucleon form factor data
• Femto-Photography of Protons to Nuclei with Deeply Virtual Compton Scattering
• Nucleon electromagnetic and gravitational form factors from holography
• Light-Front Hadron Dynamics and AdS/CFT Correspondence
• The Charge Form Factor of the Neutron from the Reaction \pol{2H}(\pol{e},e'n)p
• Symmetries and structure of skewed and double distributions
• Evolution and models for skewed parton distributions
• A Measurement of the Electric Form Factor of the Neutron through $\vec{d}(\vec{e},e^{\prime }n)p$ at $Q^2=0.5$ (GeV/c)${}^2$
• Measurement of the Electric Form Factor of the Neutron at Q^2=0.5 and 1.0 (GeV/c)^2
• Flavor decomposition of the elastic nucleon electromagnetic form factors
• Nucleon form factors, generalized parton distributions and quark angular momentum
• Measurement of the Electric Form Factor of the Neutron at Q^2 = 0.3-0.8 (GeV/c)^2
• Transverse Charge Densities
• An AdS/QCD holographic wavefunction for the rho meson and diffractive rho meson electroproduction
• Measurements of the Electric Form Factor of the Neutron up to Q2=3.4 GeV2 using the Reaction He3(e,e'n)pp
• Production of the Smallest QED Atom: True Muonium (mu^+ mu^-)
• The neutron charge form factor and target analyzing powers from pol.3He(pol e,e'n)-scattering
• Empirical transverse charge densities in the nucleon and the nucleon-to-$\Delta$ transition
• Exact Light-Cone Wavefunction Representation of Matrix Elements of Electroweak Current
• Baryon Spectrum from Superconformal Quantum Mechanics and its Light-Front Holographic Embedding
• Light-front quark model consistent with Drell-Yan-West duality and quark counting rules
• Measurements of the neutron electric to magnetic form factor ratio GEn/GMn via the ^2H(\vec{e},e'\vec{n})^1H reaction to Q^2 = 1.45 (GeV/c)^2
• Realistic Transverse Images of the Proton Charge and Magnetic Densities
• The target asymmetry in hard vector-meson electroproduction and parton angular momenta
• Generalized Parton Distributions for the Proton in AdS/QCD
• Polynomiality of unpolarized off-forward distribution functions and the D-term in the chiral quark-soliton model
• Measurement of double-spin asymmetries associated with deeply virtual Compton scattering on a transversely polarized hydrogen target
• Flavor decomposition of the nucleon electromagnetic form factors
• Hadron Optics in Three-Dimensional Invariant Coordinate Space from Deeply Virtual Compton Scattering
• Nucleon and flavor form factors in a light front quark model in AdS/QCD
• Hadron Optics: Diffraction Patterns in Deeply Virtual Compton Scattering
• Generalized Parton Distributions and Their Singularities
• Electromagnetic Form Factors and Charge Densities From Hadrons to Nuclei
• Chiral odd GPDs in transverse and longitudinal impact parameter spaces
• Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on a longitudinally polarized deuterium target
• Generalized Parton Distributions for the Proton in Position Space : Non-Zero Skewness
• Transverse charge and magnetization densities in holographic QCD
• Modeling Nucleon Generalized Parton Distributions
• Exclusive channels in semi-inclusive production of pions and kaons
• Polynomiality of helicity off-forward distribution functions in the chiral quark-soliton model
• Generalized Parton Distributions of the Proton in Position Space : Zero Skewness

Cited by in corpus (45)

• The Spin Structure of the Nucleon
• Nucleon structure from basis light-front quantization
• Proton structure from a light-front Hamiltonian
• A light front quark-diquark model for the nucleons
• Gravitational form factors and mechanical properties of proton in a light-front quark-diquark model
• Chiral-odd generalized parton distributions for proton in a light-front quark-diquark model
• Wigner distributions and orbital angular momentum of a proton
• The transverse structure of the pion in momentum space inspired by the AdS/QCD correspondence
• Angular momentum and generalized parton distributions for the proton with basis light-front quantization
• Gluon distributions in the proton in a light-front spectator model
• Generalized Parton Distributions of Pion for Non-Zero Skewness in AdS/QCD
• Helicity-dependent generalized parton distributions for nonzero skewness
• Generalized parton distributions and spin structures of light mesons from a light-front Hamiltonian approach
• Relating transverse structure of various parton distributions
• Leading twist generalized parton distributions and spin densities in a proton
• Tomography of light mesons in light-cone quark model
• Gravitational form factors and angular momentum densities in light-front quark-diquark model
• Spatial imaging of proton via leading-twist non-skewed GPDs with basis light-front quantization
• Longitudinal momentum densities in transverse plane for nucleons
• Study of kaon structure using the light-cone quark model
• Deuteron transverse densities in holographic QCD
• Charge and longitudinal momentum distributions in transverse coordinate space
• Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model
• Leading twist GTMDs at nonzero skewness and Wigner distributions in boost-invariant longitudinal position space
• Sub-leading twist transverse momentum dependent parton distributions in the light-front quark-diquark model
• Twist-4 T-even proton TMDs in the light-front quark-diquark model
• Parametrization of GPDs from t-channel string exchange in AdS spaces
• Nucleon electroweak form factors using spin-improved holographic light-front wavefunctions
• String-based parametrization of nucleon GPDs at any skewness: a comparison to lattice QCD
• Polarized gluon distribution in the proton from holographic light-front QCD
• Regularization dependence of pion generalised parton distributions
• Sivers and Boer-Mulders TMDs of proton in a light-front quark-diquark model
• Nucleon to $\Delta$ transition form factors and empirical transverse charge densities
• Hadron Spectroscopy and Dynamics from Light-Front Holography and Superconformal Algebra
• Light-Front Holography, Color Confinement, and Supersymmetric Features of QCD
• Twist-4 proton GTMDs in the light-front quark-diquark model
• Unraveling sub-leading twist GTMDs of proton using LFQDM
• A Comparative Study of Nucleon Structure in Light-Front Quark Models in AdS/QCD
• Form factors of the nucleon by using the t dependence of parton distribution functions
• Gluon generalized transverse momentum dependent parton distributions and Wigner functions of the Proton
• Deuteron gravitational form factors, generalized parton distributions, and charge density in the framework of the soft-wall AdS/QCD model
• Flavour structure of the nucleon electromagnetic form factors and transverse charge densities in the chiral quark-soliton model
• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects
• Examining the structure functions of nucleons by introducing new Ansatz and their consequences on parton distribution functions in higher approximation
• T-odd Wigner Distributions in boost-invariant longitudinal position space and Spin-momentum correlation in proton