A Measurement and QCD Analysis of the Proton Structure Function $F_2(x,Q^2)$ at HERA

Abstract

A new measurement of the proton structure function $F_2(x,Q^2)$ is reported for momentum transfers squared $Q^2$ between 1.5 GeV${}^2$ and 5000 GeV${}^2$ and for Bjorken $x$ between $3\cdot 10^{-5}$ and 0.32 using data collected by the HERA experiment H1 in 1994. The data represent an increase in statistics by a factor of ten with respect to the analysis of the 1993 data. Substantial extension of the kinematic range towards low $Q^2$ and $x$ has been achieved using dedicated data samples and events with initial state photon radiation. The structure function is found to increase significantly with decreasing $x$, even in the lowest accessible $Q^2$ region. The data are well described by a Next to Leading Order QCD fit and the gluon density is extracted.

35 pages, latex, 12 Figures (3 bitmapped)

References in corpus (12)

• Pinning down the Glue in the Proton
• CTEQ Parton Distributions and Flavor Dependence of Sea Quarks
• Determination of the Strange Quark Content of the Nucleon from a Next-to-Leading-Order QCD Analysis of Neutrino Charm Production
• Measurement of the proton and the deuteron structure functions F2p and F2d
• A Measurement of the Proton Structure Function $F_2(x,Q^2)$
• Rates for Inclusive Deep-Inelastic Electroproduction of Charm Quarks at HERA
• Structure functions and low x physics
• Proton structure function at small Q^2
• Double Asymptotic Scaling at HERA
• On the Kinematic Reconstruction of Deep Inelastic Scattering at HERA: the $\Sigma$ Method
• Transverse Energy and Forward Jet Production in the Low $x$ Regime at HERA
• The Gluon Density of the Proton at Low $x$ from a QCD Analysis of $F_2$

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