2012/10/04 by Tomasz Stebel, Stebel, Tomasz
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1210.1567
We analyze geometrical scaling in deep inelastic scattering using experimental data from HERA ep collider. Parallel analyses are performed for energy and Bjorken-x data binnings. In particular, value of parameter λwhich governs x-dependence of saturation scale is found for both binnings: λEn = 0.352 ± 0.008 and λBj = 0.302 ± 0.004. We use the following method: λEn is found as a value for which ratios σW1γ*p(τ)/σW2γ*p(τ) are closest to 1 (σWiγ*p is a photon-proton cross section with definite energy Wi and τ= Q2 xλ is a scaling variable); λBj is found analogously using ratios of cross sections with definite Bjorken-x variable. We show also that GS is present for x<0.2.