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Transverse momentum distributions in Semi-inclusive Deep Inelastic Scattering
Within a perturbative approach to Quantum Chromodynamics (QCD), we show how
to extend ordinary DGLAP longitudinal evolution equations to include the
radiative transverse momentum generated in the collinear branching regime.
Considering Semi-inclusive Deep Inelastic Scattering as a reference process, we
perform such a generalization both in the current and in the target
fragmentation region. These distributions are then used to predict
semi-inclusive Deep Inelastic Scattering cross-sections onto the whole phase
space of the detected hadron.Comment: 6 pages. Invited talk at "Symmetries and Spin", Prague, July 19-2
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