The Gluon Density of the Proton at Low $x$ from a QCD Analysis of $F_2$

Abstract

We present a QCD analysis of the proton structure function $F_2$ measured by the H1 experiment at HERA, combined with data from previous fixed target experiments. The gluon density is extracted from the scaling violations of $F_2$ in the range $2\cdot 10^{-4}<x<3\cdot 10^{-2}$ and compared with an approximate solution of the QCD evolution equations. The gluon density is found to rise steeply with decreasing $x$.

17 pages, latex2e, 5 figures appended as uuencoded file, hep number included

References in corpus (8)

• Global QCD Analysis and the CTEQ Parton Distributions
• Parton Distributions of the Proton
• First Measurement of the Deep--Inelastic Structure of Proton Diffraction
• A Measurement of the Proton Structure Function $F_2(x,Q^2)$
• Rates for Inclusive Deep-Inelastic Electroproduction of Charm Quarks at HERA
• Double Asymptotic Scaling at HERA
• Properties of the BFKL equation and structure function predictions for HERA
• A Direct Test of Perturbative QCD at Small x

Cited by in corpus (27)

• The Search for the Quark-Gluon Plasma
• Polarized Parton Distributions in the Nucleon
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• HERA Collider Physics
• Measurement of the Proton Structure Function $F_2$ at low $x$ and low $Q^2$ at HERA
• Dynamical QCD Predictions for Ultrahigh Energy Neutrino Cross Sections
• Photoproduction of $D^{\ast \pm }$ Mesons in $ep$ Collisions at HERA
• Acceptances for Space-Based and Ground-Based Fluorescence Detectors, and Inference of the Neutrino-Nucleon Cross-Section above 10^19 eV
• Enhancement and Suppression of the Neutrino-Nucleon Total Cross Section at Ultra-High Energies
• The Gluon Distribution as a Function of F${}_2$ and dF${}_2$/dlnQ${}^2$ at small x. The Next-to-Leading Analysis
• Strangeness Production in Deep-Inelastic Positron-Proton Scattering at HERA
• A Numerical Estimate of the Small-$k_T$ Region in the BFKL Pomeron
• Analysis of Low-$x$ Gluon Density from the $F_2$ Scaling Violations
• Ultrahigh-Energy Neutrino-Nucleon Cross Sections and Perturbative Unitarity
• Inelastic diffraction and color-singlet gluon-clusters in high-energy hadron-hadron and lepton-hadron collisions
• Working Group Report on the Structure of the Proton
• Small-x analysis on the effect of gluon recombinations inside hadrons in light of the GLR-MQ-ZRS equation
• On the Asymptotic Behaviour of F_2(x,Q^2)
• BFKL versus HERA
• Deep Inelastic Scattering at HERA
• Formation of color-singlet gluon-clusters and inelastic diffractive scattering
• The contribution of the four-parton final states to gamma* gamma* -> hadrons
• The $x$-Region of Shadowing Corrections in Nucleon Structure Functions
• NLO predictions for the growth of $F_2$ at small $x$ and comparison with experimental data
• Intermittency analysis in diffractive DIS processes
• A characteristic plot of pomeron-exchanged processes in diffractive DIS