Sea quark and gluon polarization in the nucleon at NLO accuracy

Abstract

We investigate the sea quark polarization in the nucleon by means of a combined next to leading order analysis to the recently enlarged set of inclusive and semi-inclusive polarized deep inelastic scattering data. Using the Lagrange multiplier method, we asses the uncertainty inherent to the extraction of the different spin dependent parton densities in a QCD global fit, and the impact of the increased set of semi-inclusive data now available. We comment on future prospects at RHIC and JLAB and their potential impact in the future determination of polarized parton densities.

15 pages, 9 figures, 3 tables

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Cited by in corpus (65)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Precise determination of the spin structure function ${\mathbf{g}}_1$ of the proton, deuteron and neutron
• Global Analysis of Helicity Parton Densities and Their Uncertainties
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Determination of fragmentation functions and their uncertainties
• The Polarised Valence Quark Distribution from semi-inclusive DIS
• Determination of gluon polarization from deep inelastic scattering and collider data
• Impact of CLAS and COMPASS data on Polarized Parton Densities and Higher Twist
• Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering
• Determination of polarized parton distribution functions with recent data on polarization asymmetries
• Flavor Structure of the Nucleon Sea
• Measurement of the parity-violating longitudinal single-spin asymmetry for $W^{\pm }$ boson production in polarized proton-proton collisions at $\sqrt{s}=500$GeV
• Probing heavy dark matter decays with multi-messenger astrophysical data
• Strangeness spin, magnetic moment and strangeness configurations of the proton
• The hadronization of partons
• Generalized form factors, generalized parton distributions and the spin contents of the nucleon
• Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC
• Next-to-next-to-leading order QCD analysis of spin-dependent parton distribution functions and their uncertainties: Jacobi polynomials approach
• Determination of pion and kaon fragmentation functions including spin asymmetries data in a global analysis
• Finite-Q^2 corrections to parity-violating DIS
• Measurements of $d_2^n$ and $A_1^n$: Probing the neutron spin structure
• The Jacobi Polynomials QCD analysis for the polarized structure function
• Polarized Deeply Inelastic Scattering (DIS) Structure Functions for Nucleons and Nuclei
• Strange Quark Contribution to the Vector and Axial Form Factors of the Nucleon: Combined Analysis of G0, HAPPEx, and Brookhaven E734 Data
• The strangeness form factors of the proton
• QCD analysis of polarized DIS and the SIDIS asymmetry world data and light sea-quark decomposition
• QCD Spin Physics: Partonic Spin Structure of the Nucleon
• The Role of Nucleon Strangeness in Supernova Explosions
• Study of spin-dependent structure functions of ${}^3\mathrm{He}$ and ${}^3\mathrm{H}$ at NNLO approximation and corresponding nuclear corrections
• Baryon vector and axial content up to the 7Q component
• A Precision Measurement of the Neutron Twist-3 Matrix Element $d_2^n$: Probing Color Forces
• Cross section and longitudinal single-spin asymmetry $A_L$ for forward $W^{\pm }\to {\mu }^{\pm }\nu$ production in polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV
• Single-Inclusive Hadron Production in Polarized pp Scattering at Next-to-Leading Logarithmic Accuracy
• Form factors and other measures of strangeness in the nucleon
• Strangeness in the proton and N*(1535)
• Single-Spin Asymmetries in W Boson Production at Next-to-Leading Order
• Prospects of Open Charm Production at GSI-FAIR and J-PARC
• Polarized parton distributions from NLO QCD analysis of world DIS and SIDIS data
• Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering
• Target mass corrections and higher twist effects in polarized deep-inelastic scattering
• Anti-Hyperon polarization in high energy pp collisions with polarized beams
• NLO QCD method of the polarized SIDIS data analysis
• On Kaon production in e+e- and Semi-inclusive DIS reactions
• Exploring the polarization of gluons in the nucleon
• A Euclidean bridge to the relativistic constituent quark model
• Impact of recent COMPASS data on polarized parton distributions and structure functions
• The s-s(bar) asymmetry in nucleon and "NuTeV anomaly"
• Orbital structure of quarks inside the nucleon in the light-cone diquark model
• Next-to-Leading Order QCD Corrections to Heavy Quark Correlations in Longitudinally Polarized Hadron-Hadron Collisions
• Valence Quark Polarization In the Nucleon And the Deuteron Data
• On the new COMPASS measurement of the deuteron spin-dependent structure function $g_1^d$
• Constraints on gluon polarization in the nucleon at NLO accuracy
• Non-Singlet spin structure function in the valon model and low x scaling behavior of $g_1^{NS}$ and $g_1^p$
• Evolution of the Truncated Mellin Moments of the parton distributions in QCD analysis
• An analysis of polarized parton distribution functions with nonlinear QCD evolution equations
• QCD corrections to longitudinal spin asymmetries in $W^{\pm }$-boson production at RHIC
• Longitudinal parity-violating asymmetry in hadronic decays of weak bosons in polarized proton collisions
• Towards an understanding of nucleon spin structure: from hard to soft scales
• Measurement of the longitudinal spin structure of the proton by COMPASS
• Effect of symmetry breaking of polarized light sea quarks on the nucleon and nuclear structure functions, and sum rules
• Sea quark polarization and semi-inclusive DIS data
• Recent results of high-energy spin phenomena of gluons and sea-quarks in polarized proton-proton collisions at RHIC at BNL
• Parton distributions and $\cos 2{\varphi }_h$ asymmetry induced by anomalous photon-quark coupling
• Parton distribution functions and QCD coupling constant from LHC and non-LHC data