F2p at low Q² and the total gamma-p cross section at HERA

2001/06/04 by S. Levonian, Levonian, S.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0106014

3 pages, 4 figures, talk at ICHEP2000

arxiv created 2001/06/04 · openalex publication_date 2001/06/04 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

New precise measurements of the neutral current cross section at HERA are presented in different Q² regimes. In the photoproduction limit the total gamma-p cross section is found to be in agreement with the universal soft Pomeron prediction. At medium scales 1.5 < Q² < 150 GeV² both the F₂ and the F_L structure functions are determined. These data are well described by NLO pQCD. The gluon density in the proton has been extracted from the scaling violation of F₂ at low x. The transition between the two regimes occurs at around Q²=1 GeV².

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