Total cross sections and event properties from real to virtual photons
Christer Friberg; Torbjörn Sjöstrand
Журнал:
Journal of High Energy Physics
Дата:
2000-09-01
Аннотация:
A model for total cross sections with virtual photons is presented. In particular γ*p and γ*γ* cross sections are considered. Our approach extends on a model for photoproduction, where the total cross section is subdivided into three distinct event classes: direct, VMD and anomalous. With increasing photon virtuality, the latter two decrease in importance. Instead Deep Inelastic Scattering dominates, with the direct class being the O(α<sub>s</sub>) correction thereof. Hence, the model provides a smooth transition between the two regions. By the breakdown into different event classes, one may aim for a complete picture of all event properties.
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