Small-x Physics and Forward Jet Production at THERA
نویسنده
چکیده
The evolution of the parton densities at small x is a very rich but complicated issue. The steep rise of the structure function F2 at small x is explained by the presence of a huge gluon number density. The pure DGLAP [ 1, 2, 3, 4] evolution equations, meant to describe the evolution of the parton densities as a function of Q, are able to reproduce the rise of F2 provided the input starting distributions are chosen properly. Figure 1 shows the pattern of QCD initial-state radiation in a small-x DIS event, together with labels for the kinematics. The gluon splitting function Pgg is given by: Pgg(zi, k ) = ᾱs (
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