A New Evaluation of Polarized Parton Densities in the Nucleon

Abstract

We present a new leading and next-to-leading QCD analysis of the world data on inclusive polarized deep inelastic scattering. A new set of polarized parton densities is extracted from the data and the sensitivity of the results to the newly incorporated SLAC/E155 proton data is discussed.

14 pages, LaTeX, 10 ps figures, the polarized PD FORTRAN code is available, minor corrections on p.3, 1 ref added (to appear in Eur. J. Phys. C)

Cited by in corpus (54)

• Generalized Parton Distributions
• Unraveling hadron structure with generalized parton distributions
• Next-to-leading order QCD corrections to high-p_T pion production in longitudinally polarized pp collisions
• Precision Measurement of the Neutron Spin Asymmetries and Spin-dependent Structure Functions in the Valence Quark Region
• The two-photon exchange contribution to elastic electron-nucleon scattering at large momentum transfer
• The Spin Structure of the Proton
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Spin Structure of the Nucleon - Status and Recent Results
• QCD Analysis of the Polarized World Data
• Nuclear parton distribution functions and their uncertainties
• QCD Analysis of Polarized Deep Inelastic Scattering Data
• Precision Measurement of the Neutron Spin Asymmetry $A_1^n$ and Spin-Flavor Decomposition in the Valence Quark Region
• Determination of polarized parton distribution functions and their uncertainties
• The Spin Structure of the Nucleon
• The Theory of Deeply Inelastic Scattering
• Longitudinal Polarized Parton Densities Updated
• Deep Electroproduction of Photons and Mesons on the Deuteron
• Parton intrinsic motion: suppression of the Collins mechanism for transverse single spin asymmetries in p(transv. polarised) p --> pion + X
• Twist-two matrix elements at finite and infinite volume
• The statistical parton distributions: status and prospects
• Next-to-leading order QCD corrections to one hadron-production in polarized pp collisions at RHIC
• Unified Description of Polarized and Unpolarized Quark Distributions in the Proton
• The Jacobi Polynomials QCD analysis for the polarized structure function
• Polarized Deeply Inelastic Scattering (DIS) Structure Functions for Nucleons and Nuclei
• On the Role of Higher Twist in Polarized Deep Inelastic Scattering
• Nucleon resonance contributions to unpolarised inclusive electron scattering
• QCD analysis of polarized DIS and the SIDIS asymmetry world data and light sea-quark decomposition
• Can the polarization of the strange quarks in the proton be positive ?
• Global Analysis of Data on the Proton Structure Function g1 and Extraction of its Moments
• Nucleon spin decomposition with one dynamical gluon
• Anti-Lambda polarization in high energy pp collisions with polarized beam
• NLO QCD procedure of the semi-inclusive deep inelastic scattering data analysis with respect to the light quark polarized sea
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Probing the longitudinal spin transfer via dihadron polarization correlations in unpolarized $e^{+}{e}^{-}$ and $pp$ collisions
• Role of Positivity Constraints in Determining Polarized Parton Densities
• NLO QCD method of the polarized SIDIS data analysis
• First Extraction of Transverse Momentum Dependent Helicity Distributions
• Impact of recent COMPASS data on polarized parton distributions and structure functions
• Spin constraints on Regge predictions and perturbative evolution in high energy collisions
• Polarized Structure Functions in the Valence Quark and Resonance Regions and the GDH Sum
• Highlights and Perspectives of the JLab Spin Physics Program
• Higher Order Heavy Quark Corrections to Deep-Inelastic Scattering
• An analysis of polarized parton distribution functions with nonlinear QCD evolution equations
• Effect of polarized gluon distribution on spin asymmetries for neutral and charged pion production
• The constraints on the non-singlet polarised parton densities from the infrared-renormalon model
• Re-examining valence quark spin distributions
• Soft Pion Emission in Hard Exclusive Pion Production
• AAC analysis of polarized parton distributions with uncertainties
• The consequences of the relations between non-singlet contributions to $g_1^N$ and $F_1^N$ structure functions within infrared renormalon model
• A rigorous bound on quark distributions in the nucleon
• Uncertainty of polarized gluon distribution from prompt photon production
• Nuclear effects in polarized proton-deuteron Drell-Yan processes
• On the Relation Between x-dependence of the Higher Twist Contribution to F_3 and g_1^p - g_1^n
• Parity Violation with Electrons and Hadrons