LU TP 00-15
hep-ph/0005048
May 2000
Total Cross Sections with Virtual Photons
C. Friberg
A model for total cross sections with virtual photons is presented,
in particular gamma-p and gamma-gamma cross sections are
considered. Our approach is based on an existing model for
photoproduction, which subdivides the total cross section into
three distinct event classes: direct, VMD and
anomalous. In the region of large photon virtualities,
the Deep Inelastic Scattering processes
(up to O(alpha_s) corrections) are obtained.
Hence, the model provides a smooth transition between the
two regions. By the breakdown into different event classes, a
complete picture of all event properties is the ultimate goal.
To appear in the Proceedings of
the LEP2 Workshop on Monte Carlo generators