  n these proceedings I discuss several recent developments in the physics of
heavy flavor jets in heavy ion collisions. i) The dijet mass modification in
nucleus-nucleus reactions has been proposed as a new observable with enhanced
sensitivity to parton energy loss in nuclear matter. It also enables more
precise studies of heavy quark mass effects on parton shower formation. ii)
Computational techniques from soft-collinear effective theory have allowed us
to bridge the gap between high energy and heavy ion QCD phenomenology. I show
the first application of the semi-inclusive jet function formalism to heavy
flavor jet production in proton-nucleus and nucleus-nucleus collisions at the
LHC. iii) Last but not least, central to the theoretical calculations of heavy
flavor jets is the accurate theoretical description of in-medium parton
showers. A formalism to compute branching processes in nuclear matter to any
desired order in opacity has been developed and illustrative numerical results
are presented.
