  With high-statistics data coming from both RHIC and LHC, the experimentally
available selection of hard tomographic probes for the medium created in
ultrarelativistic heavy-ion (A-A) collisions is rapidly expanding. Jet-hadron
(jet-h) correlation measurements as introduced by the STAR collaboration are a
promising avenue to study the structure of highly modified jets in a
differential way since the away side correlation can be measured down to very
low transverse momenta (P_T) in an essentially hydrodynamical regime. At the
same time the geometry bias introduced by the trigger condition ensures that
the away side shower has propagated a long distance in the medium. The aim of
this paper is to provide a theoretical overview of the observable, discuss
similarities and differences to other correlation observables such as
hadron-hadron (h-h) and gamma-hadron (gamma-h) correlations and to provide
recommendations for future measurements.
