Phenomenology of forward hadrons in deep inelastic scattering: Fracture functions and itsQ2evolution

D. de Florian, R. Sassot
1997 Physical Review D, Particles and fields  
We analyse recent data on the production of forward neutrons in deep inelastic scattering at HERA in the framework of a perturbative QCD description for semi-inclusive processes, which includes fracture functions. Using a model estimate for the non-perturbative piece of the fragmentation process, in fairly good agreement with the available data, we analyse the Q^2 dependence of the resulting fracture functions, which is driven by non-homogeneous evolution equations. We also propose a
more » ... of the pion production cross section in the target fragmentation region as a new test of perturbative QCD, which in this case predicts also a different Q^2 evolution with respect to the one given by the usual Altarelli-Parisi equations.
doi:10.1103/physrevd.56.426 fatcat:ti3qu2d2qresjcry4pc5pfdh3m