Polarized Parton Distributiions and Light-Front Dynamics

Abstract

We present a consistent calculation of the structure functions within a light-front constituent quark model of the nucleon. Relativistic effects and the relevance of the covariance constraints are analyzed for both polarized and unpolarized parton distributions. Various models, which differ in their gluonic structure at the hadronic scale, are investigated. The results of the full covariant calculation are compared with those of a non-relativistic approximation to show the structure and magnitude of the differences.

31 pages, 9 figures, major revision

References in corpus (36)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Improved Parton Distributions from Global Analysis of Recent Deep Inelastic Scattering and Inclusive Jet Data
• Global QCD Analysis and the CTEQ Parton Distributions
• Precision Determination of the Neutron Spin Structure Function g1n
• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• Explicitly Covariant Light-Front Dynamics and Relativistic Few-Body Systems
• Next-to-Leading Order Radiative Parton Model Analysis of Polarized Deep Inelastic Scattering
• Modelling quark distribution and fragmentation functions
• Polarized Parton Distributions in the Nucleon
• The Calculation of the Two-Loop Spin Splitting Functions $P_{ij}^{(1)}(x)$
• Determination of the Bjorken Sum and Strong Coupling from Polarized Structure Functions
• Unpolarized and polarized quark distributions in the large-Nc limit
• The spin-dependent two-loop splitting functions
• Nucleon and pion electromagnetic form factors in a light-front constituent quark model
• A Next-to-Leading Determination of the Singlet Axial Charge and the Polarized Gluon Content of the Nucleon
• Deep Inelastic Scattering from off-Shell Nucleons
• The Quark Spin Distributions of the Nucleon
• Gluon Spin in the Nucleon
• NLO QCD Analysis of Polarized Deep Inelastic Scattering
• Scale Dependence and Small-x Behaviour of Polarized Parton Distributions
• Polarized Parton Densities in the Nucleon
• Strong decays of qqq baryons
• Polarized Nucleon Structure Functions within a Chiral Soliton Model
• Next-to-Leading Order Analysis of Inclusive and Semi-inclusive Polarized Data
• Scheme Dependence in Polarized Deep Inelastic Scattering
• Towards an unified picture of constituent and current quarks
• A confinement model calculation of h_1(x)
• A quark model analysis of the transversity distribution
• Next-To-Leading Order Analysis of Polarized and Unpolarized Structure Functions
• Electromagnetic $N-\Delta$ transition form factors in a light-front constituent quark model
• Polarized structure functions in a constituent quark scenario
• Deep Inelastic Structure Functions in a Covariant Spectator Model
• Covariant Quark Model for the Baryons
• Nucleon Structure Functions at Moderate Q**2: Relativistic Constituent Quarks and Spectator Mass Spectrum
• Gluon Spin in a Quark Model
• Gluon Polarization from QCD Sum Rules

Cited by in corpus (33)

• Transverse Polarisation of Quarks in Hadrons
• Transverse momentum dependent parton distributions in a light-cone quark model
• Chiral-odd generalized parton distributions in constituent quark models
• Linking generalized parton distributions to constituent quark models
• Azimuthal spin asymmetries in light-cone constituent quark models
• Double parton correlations in constituent quark models
• Helicity-dependent generalized parton distributions in constituent quark models
• Virtual meson cloud of the nucleon and generalized parton distributions
• Generalized parton distributions and composite constituent quarks
• Double parton correlations and constituent quark models: a Light Front approach to the valence sector
• Correlations in Double Parton Distributions: Perturbative and Non-Perturbative effects
• Transverse-momentum dependent parton distribution functions beyond leading twist in quark models
• Parton correlations in same-sign $W$ pair production via double parton scattering at the LHC
• New anomalous trajectory in Regge theory
• Relativistic effects in model calculations of double parton distribution function
• Double parton scattering: a study of the effective cross section within a Light-Front quark model
• Nonperturbative versus perturbative effects in generalized parton distributions
• NNLO nucleon parton distributions from a light-cone quark model dressed with its virtual meson cloud
• Diffractive incoherent vector meson production off protons: a quark model approach to gluon fluctuation effects
• Double parton scattering and the proton transverse structure at the LHC
• Helicity-dependent generalized parton distributions and composite constituent quarks
• Generalized Parton Distributions: confining potential effects within AdS/QCD
• Collinear parton distributions and the structure of the nucleon sea in a light-front meson-cloud model
• Relativity and constituent quark structure in model calculations of parton distributions
• Charge symmetry violation: a NNLO study of partonic observables
• Spin force dependence of the parton distributions: the ratio $F_2^n(x,Q^2)/F_2^p(x,Q^2)$
• Orbital Angular Momentum Parton Distributions in Light-Front Dynamics
• Probing Relativistic Spin Effects in the Nucleon by Means of Drell-Yan Processes
• Double parton distributions in Light-Front constituent quark models
• Double parton scattering and 3D proton structure: A Light-Front analysis
• Generalized parton distributions of the nucleon in constituent quark models
• Double parton correlations in Light-Front constituent quark model
• Nucleon 3D structure from double parton scattering: a Light-Front quark model analysis