Abstract
A measurement is presented of the inclusive neutral current e ± p scattering cross section using data collected by the H1 experiment at HERA during the years 2003 to 2007 with proton beam energies E p of 920, 575, and 460 GeV. The kinematic range of the measurement covers low absolute four-momentum transfers squared, 1.5 GeV2<Q 2<120 GeV2, small values of Bjorken x, 2.9⋅10−5<x<0.01, and extends to high inelasticity up to y=0.85. The structure function F L is measured by combining the new results with previously published H1 data at E p =920 GeV and E p =820 GeV. The new measurements are used to test several phenomenological and QCD models applicable in this low Q 2 and low x kinematic domain.
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The H1 Collaboration., Aaron, F.D., Alexa, C. et al. Measurement of the inclusive e ± p scattering cross section at high inelasticity y and of the structure function F L . Eur. Phys. J. C 71, 1579 (2011). https://doi.org/10.1140/epjc/s10052-011-1579-4
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DOI: https://doi.org/10.1140/epjc/s10052-011-1579-4