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Geometric scaling applied to lepton–ion collisions
Author(s) -
Ben Felipe G.,
Machado Magno V. T.,
Sauter Werner K.
Publication year - 2019
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.201913706
Subject(s) - physics , scaling , virtual particle , compton scattering , nuclear physics , photon , lepton , heavy ion , scattering , saturation (graph theory) , electron , particle physics , cosmic ray , cross section (physics) , ion , quantum mechanics , geometry , mathematics , combinatorics
In this article, we discuss a scaling function for the cross section in deeply virtual compton scattering (DVCS) and exclusive vector meson production in both γ * p and γ * A processes. Our description relies on the geometric scaling phenomenon in which cross sections are a function of a single variable τ = Q 2 / Q s 2 , where Q 2 is the photon virtuality andQ s 2represents the saturation scale that drives the energy dependence and nuclear effects. We make a prediction to be tested in future electron–ion colliders.