  The suppression of large transverse momentum hadrons in heavy-ion (A-A)
collisions as compared to their scaled expectation from proton-proton
collisions due to the interaction of hard partons with the hot and dense QCD
medium in A-A collisions is experimentally a well established phenomenon.
Focusing on leading hadrons produced in hard processes, the medium effect
appears as energy loss. Beyond that, the question is how the lost energy is
redistributed in the medium. With increased experimental statistics and most
importantly the kinematic range of the LHC, studying the properties of full
jets rather than leading hadrons is becoming feasible. On the theory side,
analytic models and Monte-Carlo (MC) codes for in-medium shower evolution are
being developed to describe jets in the medium. In this paper, expectations for
medium-modified jet observables, the jet shapes, the thrust distribution and
the n-jet fraction, are computed with the MC code YaJEM for various scenarios
of the parton-medium interaction which all are consistent with high P_T hadron
suppression data. The computation is done at 20 and 100 GeV jet energy,
corresponding to probing typical RHIC and LHC kinematics, and the possibility
to make an unbiased measurement of the observables is discussed.
