  Jet-medium interaction involves two important effects: jet energy loss and
medium response. The search for jet-induced medium excitations is one of the
hot topics in jet quenching study in relativistic nuclear collisions. In this
work, we perform a systematic study on how the lost energy from hard jets
evolves with the bulk medium and redistributes in the final state of heavy-ion
collisions via a multi-phase transport model. In particular, the ($\Delta \eta,
\Delta \phi$) distribution of charged particles with respect to the jet axis
and jet shape function are studied for various Pb+Pb collision centralities and
for different transverse momentum intervals of charged particles. Our numerical
result shows a strong enhancement of soft particles at large angles for Pb+Pb
collisions relative to p+p collisions at the LHC, qualitatively consistent with
recent CMS data. This indicates that a significant fraction of the lost energy
from hard jets is carried by soft particles at large angles away from the jet
axis.
