Statistical description of the proton spin with a large gluon helicity distribution

Abstract

The quantum statistical parton distributions approach proposed more than one decade ago is revisited by considering a larger set of recent and accurate Deep Inelastic Scattering (DIS) experimental results. It enables us to improve the description of the data by means of a new determination of the parton distributions. We will see that a large gluon polarization emerges, giving a significant contribution to the proton spin.

arXiv comment11 pages, 4 figures

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Cited by in corpus (11)

• Parton distributions and lattice QCD calculations: a community white paper
• Precision Measurement of the Longitudinal Double-spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at $\sqrt{s}=200$ GeV
• The Spin Structure of the Nucleon
• New developments in the statistical approach of parton distributions: tests and predictions up to LHC energies
• Precision Measurements of $A_1^n$ in the Deep Inelastic Regime
• Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at $\sqrt{s}=200$ GeV
• Polarized gluon distribution in the proton from holographic light-front QCD
• Properties of structure functions from helicity components\\ of light quarks and antiquarks in the statistical model
• Analysis of HERA data with a PDF parametrization inspired by quantum statistical mechanics
• Parton Distribution Functions properties of the statistical model
• New Statistical PDFs: Predictions and Tests up to LHC Energies