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

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

1997-03-20

arxiv.org/abs/hep-ex/9703012v1

Nucl.Phys.B497:3-30,1997

Physics

High Energy Physics

High Energy Physics - Experiment

27 pages, 10 Figures

Scientific paper

10.1016/S0550-3213(97)00301-5

The results of a measurement of the proton structure function F_2(x,Q^2)and the virtual photon-proton cross section are reported for momentum transfers squared Q^2 between 0.35 GeV^2 and 3.5 GeV^2 and for Bjorken-x values down to 6 10^{-6} using data collected by the HERA experiment H1 in 1995. The data represent an increase in kinematic reach to lower x and Q^2 values of about a factor of 5 compared to previous H1 measurements. Including measurements from fixed target experiments the rise of F_2 with decreasing x is found to be less steep for the lowest Q^2 values measured. Phenomenological models at low Q^2 are compared with the data.

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