Geometric Scaling for the Total γ^{*}p Cross Section in the Low x Region
Abstract
We observe that the saturation model of deep inelastic scattering predicts a geometric scaling of the total γ^{*}p cross section in the region of small Bjorken variable x. The geometric scaling in this case means that the cross section is a function of only one dimensionless variable τ = Q^{2}R^{2}_{0}\(x\), where the function R_{0}\(x\) decreases with decreasing x. We show that the experimental data from HERA in the region x<0.01 confirm the expectations of this scaling over a very broad region of Q^{2}. We suggest that the geometric scaling is more general than the saturation model.
 Publication:

Physical Review Letters
 Pub Date:
 January 2001
 DOI:
 10.1103/PhysRevLett.86.596
 arXiv:
 arXiv:hepph/0007192
 Bibcode:
 2001PhRvL..86..596S
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 12 pages, 4 figures, LaTeX, revised version to appear in journal. 1 new figure, several new references added, extended discussion on saturation radius