Implications of Scaling Violations of F2 at HERA for Perturbative QCD

Abstract

We critically examine the QCD predictions for the $Q^2$ dependence of the electron-proton deep-inelastic structure function $F_2(x,Q^2)$ in the small $x$ region, which is being probed at HERA. The standard results based on next-to-leading order Altarelli-Parisi evolution are compared with those that follow from the BFKL equation, which corresponds to the resummation of the leading log$(1/x)$ terms. The effects of parton screening are also quantified. The theoretical predictions are confronted with each other, and with existing data from HERA. (3 Postscript figures included).

(8 Latex Pages) IFJ 1653/PH

References in corpus (3)

• Total cross sections
• Proton structure function at small Q^2
• On the Validity of Perturbative Evolution of Structure Functions from Low $Q^2$

Cited by in corpus (18)

• Parton Distributions of the Proton
• Structure Functions of the Nucleon and their Interpretation
• Confronting Mueller-Navelet jets in NLL BFKL with LHC experiments at 7 TeV
• Measurement of Charged Particle Transverse Momentum Spectra in Deep Inelastic Scattering
• Quark-antiquark contribution to the BFKL kernel
• Parton Distributions for Low Q^2
• Transverse Energy and Forward Jet Production in the Low $x$ Regime at HERA
• Proton structure functions in the dipole picture of BFKL dynamics
• THE GLUON DISTRIBUTION AT SMALL x OBTAINED FROM A UNIFIED EVOLUTION EQUATION.
• Onium-Onium scattering at fixed impact parameter: exact equivalence between the color dipole model and the BFKL Pomeron
• Constraining the nuclear gluon distribution in $eA$ processes at RHIC
• QCD Predictions for the Transverse Energy Flow in Deep-Inelastic Scattering in the Small x HERA Regime
• Strangeness Production in Deep-Inelastic Positron-Proton Scattering at HERA
• Renormalization Scheme Consistent Structure Functions, Including Leading ln (1/x) Terms
• Nucleon Structure Functions at Moderate Q**2: Relativistic Constituent Quarks and Spectator Mass Spectrum
• Transverse Energy Flow at HERA
• A Complete Leading-Order, Renormalization-Scheme-Consistent Calculation of Structure Functions
• Physics at Low x