D. Schildknecht
نویسنده
چکیده
Saturation at low x appears as an almost unavoidable consequence of the two-gluon exchange generic structure. Consistency of the ansatz for the vector part of the color dipole cross section with conventional evolution determines the energy dependence of the saturation scale. In this written version of my talk I will restrict myself to a discussion of the empirical evidence for the concept of " saturation " at low x in deep inelastic lepton-nucleon scattering (DIS) and of a consistency argument that allows one to predict the energy dependence of the saturation scale. In the model-independent analysis of the experimental data from HERA on DIS at low x carried out in the summer of the year 2000, we found[1] that the data on the total virtual photoabsorption cross section lie on a universal curve when plotted against the dimensionless variable η = Q 2 + m 2 0
منابع مشابه
O ct 1 99 9 BI - TP 99 / 30 HIGH - ENERGY CROSS SECTION FOR e + e − → W + W − → 4 FERMIONS ( + γ ) †
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تاریخ انتشار 2004