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

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

1996-03-18

arxiv.org/abs/hep-ex/9603004v2

Nucl.Phys.B470:3-40,1996

Physics

High Energy Physics

High Energy Physics - Experiment

35 pages, latex, 12 Figures (3 bitmapped)

Scientific paper

10.1016/0550-3213(96)00211-8

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.

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