Transverse-momentum distributions in a diquark spectator model

Abstract

All the leading-twist parton distribution functions are calculated in a spectator model of the nucleon, using scalar and axial-vector diquarks. Single gluon rescattering is used to generate T-odd distribution functions. Different choices for the diquark polarization states are considered, as well as a few options for the form factor at the nucleon-quark-diquark vertex. The results are listed in analytic form and interpreted in terms of light-cone wave functions. The model parameters are fixed by reproducing the phenomenological parametrization of unpolarized and helicity parton distributions at the lowest available scale. Predictions for the other parton densities are given and, whenever possible, compared with available phenomenological parametrizations.

42 pages, 13 figures in .eps format. RevTeX style. Minor typos corrected, added one reference

References in corpus (16)

• Relations between generalized and transverse momentum dependent parton distributions
• Matches and mismatches in the descriptions of semi-inclusive processes at low and high transverse momentum
• Transverse spin structure of the nucleon from lattice QCD simulations
• Transverse Quark Spin Effects and the Flavor Dependence of the Boer-Mulders Function
• Transversity quark distributions in a covariant quark-diquark model
• Are all Boer-Mulders functions alike?
• Effect of Orbital Angular Momentum on Valence-Quark Helicity Distributions
• A quark model analysis of the Sivers function
• Transverse momentum dependence of semi-inclusive pion production
• Connection between the Sivers function and the anomalous magnetic moment
• Single Transverse-Spin Asymmetry in Hadronic Dijet Production
• Extracting Boer-Mulders functions from $p+D$ Drell-Yan processes
• Comparative analysis of the transversities and the longitudinally polarized distribution functions of the nucleon
• Single Transverse-Spin Asymmetries at Large-x
• The cos 2 phi asymmetry of Drell-Yan and J/psi production in unpolarized ppbar scattering
• Double transverse spin asymmetry in the $p^{\uparrow }{\bar{p}}^{\uparrow }$ Drell-Yan process from Sivers functions

Cited by in corpus (6)

• Azimuthal spin asymmetries in light-cone constituent quark models
• Pretzelosity $h_{1T}^{\perp }$ and quark orbital angular momentum
• Transverse momentum dependent distribution functions in a covariant parton model approach with quark orbital motion
• Model calculations of the Sivers function satisfying the Burkardt Sum Rule
• Transverse momentum distributions of quarks in the nucleon from the Chiral Quark Soliton Model
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp