  Two suggested models of jet fragmentation in a quark-gluon plasma have been
tested, combined and further developed. This has been done by generating hard
processes in proton-proton collisions at $\sqrt{s}=2.76$ GeV in PYTHIA 8 with a
modified parton shower algorithm. Subsequently, a jet analysis of the final
state hadrons have been performed with the FastJet recombination package. The
results have been compared to unmodified jets in proton-proton collisions at
the same collision energy, and to experimental data obtained by ATLAS. It has
been shown that modifications of the parton splitting kernels alone is an
insufficient modification to reproduce experimental data on dijet energy
asymmetry and azimuthal decorrelation. Additional jet decollimation
qualitatively reproduces the main features of the data provided certain
variables are chosen aptly. We also study other jet characteristics with the
model, such as the jet substructure, that may be observable experimentally in a
near future.
